java: IDEA-56612 code completion for catch argument must suggest only exception classes

java/java-tests/testData/codeInsight/completion/normal/OnlyAnnotationsAfterAt.java

@@ -0,0 +1,5 @@
+class AbcdClass {}
+@interface AbcdAnno {}
+
+@Abcd<caret>
+class Foo {}

java/java-tests/testData/codeInsight/completion/normal/OnlyAnnotationsAfterAt_after.java

@@ -0,0 +1,5 @@
+class AbcdClass {}
+@interface AbcdAnno {}
+
+@AbcdAnno
+class Foo {}

java/java-tests/testData/codeInsight/completion/normal/OnlyExceptionsInCatch.java

@@ -0,0 +1,10 @@
+class AbcdClass {}
+class AbcdException extends Throwable {}
+
+class Foo {
+  {
+    try {
+
+    } catch (Abcd<caret>)
+  }
+}

java/java-tests/testData/codeInsight/completion/normal/OnlyExceptionsInCatch_after.java

@@ -0,0 +1,10 @@
+class AbcdClass {}
+class AbcdException extends Throwable {}
+
+class Foo {
+  {
+    try {
+
+    } catch (AbcdException<caret>)
+  }
+}