Update src/EditorFeatures/VisualBasicTest/CodeActions/ReplaceMethodWithProperty/ReplaceMethodWithPropertyTests.vb
Co-Authored-By: NCyrusNajmabadi <cyrus.najmabadi@gmail.com>

Update src/EditorFeatures/CSharpTest/CodeActions/ReplaceMethodWithProperty/ReplaceMethodWithPropertyTests.cs
Co-Authored-By: NCyrusNajmabadi <cyrus.najmabadi@gmail.com>

* Add WhereAsArray with generic argument.

* Feedback

Change all the direct uses of `Environment.FailFast` to instead use
`FailFast.Fail`. The latter has diagnostics which are useful for determining why
unit tests are failing.

This change ensures that shared projects will contain all source files
that would be included by a globbing approach, allowing for a simple
future transition to globbing once supported by the project system.

This reverts commit 423c52f2.

* Use globs in .projitems

* Revert EE changes

* Use DefaultLanguageSourceExtension