Unskip tests that were skipped due to adaptive formatting triggering

We had tests that set "use tabs" but then were working in a file of
mostly spaces. The editor behavior now is to treat this as if the
file had the "use spaces" on. I alternatively could have chosen to
disable inferrence, but then it seems we're not actually testing the
more mainline scenario of somebody having tabs in the entire file, which
seems like it's worth testing over odd mixed cases.

Closes https://github.com/dotnet/roslyn/issues/39967

src/EditorFeatures/CSharpTest/DocumentationComments/DocumentationCommentTests.cs

@@ -1341,30 +1341,30 @@ void M()
         }
 
         [WorkItem(2108, "https://github.com/dotnet/roslyn/issues/2108")]
-        [WpfFact(Skip = "https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)]
+        [WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)]
         public void PressingEnter_Indentation5_UseTabs()
         {
             const string code =
 @"class C
 {
-    /// <summary>
+	/// <summary>
 	///     hello world$$
-    /// </summary>
-    void M()
-    {
-    }
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             const string expected =
 @"class C
 {
-    /// <summary>
+	/// <summary>
 	///     hello world
 	///     $$
-    /// </summary>
-    void M()
-    {
-    }
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             VerifyPressingEnter(code, expected, useTabs: true);
@@ -1813,18 +1813,18 @@ void M()
         }
 
         [WorkItem(2090, "https://github.com/dotnet/roslyn/issues/2090")]
-        [WpfFact(Skip = "https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)]
+        [WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)]
         public void TestOpenLineAbove4_Tabs()
         {
             const string code =
 @"class C
 {
 		  /// <summary>
-    /// $$stuff
-    /// </summary>
-    void M()
-    {
-    }
+	/// $$stuff
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             const string expected =
@@ -1832,11 +1832,11 @@ void M()
 {
 		  /// <summary>
 		  /// $$
-    /// stuff
-    /// </summary>
-    void M()
-    {
-    }
+	/// stuff
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             VerifyOpenLineAbove(code, expected, useTabs: true);
@@ -1923,30 +1923,30 @@ public void TestOpenLineBelow3()
         }
 
         [WorkItem(2090, "https://github.com/dotnet/roslyn/issues/2090")]
-        [WpfFact(Skip = "https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)]
+        [WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)]
         public void TestOpenLineBelow4_Tabs()
         {
             const string code =
 @"class C
 {
-    /// <summary>
+	/// <summary>
 		  /// $$stuff
-    /// </summary>
-    void M()
-    {
-    }
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             const string expected =
 @"class C
 {
-    /// <summary>
+	/// <summary>
 		  /// stuff
 		  /// $$
-    /// </summary>
-    void M()
-    {
-    }
+	/// </summary>
+	void M()
+	{
+	}
 }";
 
             VerifyOpenLineBelow(code, expected, useTabs: true);

src/EditorFeatures/VisualBasicTest/DocumentationComments/DocumentationCommentTests.vb

@@ -763,25 +763,25 @@ End Class
         End Sub
 
         <WorkItem(2108, "https://github.com/dotnet/roslyn/issues/2108")>
-        <WpfFact(Skip:="https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)>
+        <WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)>
         Public Sub TestPressingEnter_Indentation5_UseTabs()
             Const code = "
 Class C
-    ''' <summary>
+	''' <summary>
 	'''     hello world$$
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             Const expected = "
 Class C
-    ''' <summary>
+	''' <summary>
 	'''     hello world
 	'''     $$
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             VerifyPressingEnter(code, expected, useTabs:=True)
@@ -1083,25 +1083,25 @@ End Class
         End Sub
 
         <WorkItem(2090, "https://github.com/dotnet/roslyn/issues/2090")>
-        <WpfFact(Skip:="https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)>
+        <WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)>
         Public Sub TestOpenLineAbove4_Tabs()
             Const code = "
 Class C
 		  ''' <summary>
-    ''' $$stuff
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' $$stuff
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             Const expected = "
 Class C
 		  ''' <summary>
 		  ''' $$
-    ''' stuff
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' stuff
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             VerifyOpenLineAbove(code, expected, useTabs:=True)
@@ -1173,25 +1173,25 @@ End Class
         End Sub
 
         <WorkItem(2090, "https://github.com/dotnet/roslyn/issues/2090")>
-        <WpfFact(Skip:="https://github.com/dotnet/roslyn/issues/39967"), Trait(Traits.Feature, Traits.Features.DocumentationComments)>
+        <WpfFact, Trait(Traits.Feature, Traits.Features.DocumentationComments)>
         Public Sub TestOpenLineBelow4_Tabs()
             Const code = "
 Class C
-    ''' <summary>
+	''' <summary>
 		  ''' $$stuff
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             Const expected = "
 Class C
-    ''' <summary>
+	''' <summary>
 		  ''' stuff
 		  ''' $$
-    ''' </summary>
-    Sub M()
-    End Sub
+	''' </summary>
+	Sub M()
+	End Sub
 End Class
 "
             VerifyOpenLineBelow(code, expected, useTabs:=True)