Fix #17384 - Autocompletion list misses params for indexers (tests)

src/EditorFeatures/CSharpTest2/Recommendations/ParamsKeywordRecommenderTests.cs

@@ -221,9 +221,9 @@ public async Task TestNotAfterDestructor()
         }
 
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
-        public async Task TestNotAfterIndexer()
+        public async Task TestAfterIndexer()
         {
-            await VerifyAbsenceAsync(
+            await VerifyKeywordAsync(
 @"class C {
     int this[$$");
         }