[java-completion] IJ-CR-129761 IDEA-349764 Suggest a full catch section

- tests are extracted
- CatchLookupElement works in dumb-mode

GitOrigin-RevId: 75b5c34ce124a4315a8a73c020ac08f01ecd9487

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

@@ -0,0 +1,6 @@
+class X{
+  public void test() {
+    try {
+    } c<caret>
+  }
+}