Added test for KT-8471

idea/idea-completion/testData/basic/common/TypeArgCompletionBug.kt

@@ -0,0 +1,8 @@
+interface FooBar1
+
+interface FooBar2 {
+    val list: List<FooBar<caret>1>
+}
+
+// EXIST: FooBar1
+// EXIST: FooBar2

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JSBasicCompletionTestGenerated.java

@@ -901,6 +901,12 @@ public class JSBasicCompletionTestGenerated extends AbstractJSBasicCompletionTes
             doTest(fileName);
         }
 
+        @TestMetadata("TypeArgCompletionBug.kt")
+        public void testTypeArgCompletionBug() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/TypeArgCompletionBug.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("TypeArgFromTheSameFile.kt")
         public void testTypeArgFromTheSameFile() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/TypeArgFromTheSameFile.kt");

idea/idea-completion/tests/org/jetbrains/kotlin/idea/completion/test/JvmBasicCompletionTestGenerated.java

@@ -901,6 +901,12 @@ public class JvmBasicCompletionTestGenerated extends AbstractJvmBasicCompletionT
             doTest(fileName);
         }
 
+        @TestMetadata("TypeArgCompletionBug.kt")
+        public void testTypeArgCompletionBug() throws Exception {
+            String fileName = JetTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/TypeArgCompletionBug.kt");
+            doTest(fileName);
+        }
+
         @TestMetadata("TypeArgFromTheSameFile.kt")
         public void testTypeArgFromTheSameFile() throws Exception {
             String fileName = JetTestUtils.navigationMetadata("idea/idea-completion/testData/basic/common/TypeArgFromTheSameFile.kt");