KT-11957 No "catch" and "finally" keywords in completion

#KT-11957 Fixed

idea/idea-completion/testData/handlers/keywords/Finally.kt

@@ -0,0 +1,10 @@
+fun t() {
+    while (true) {
+        try {
+
+        }
+        f<caret>
+    }
+}
+
+// ELEMENT: finally

idea/idea-completion/testData/handlers/keywords/Finally.kt.after

@@ -0,0 +1,12 @@
+fun t() {
+    while (true) {
+        try {
+
+        }
+        finally {
+            <caret>
+        }
+    }
+}
+
+// ELEMENT: finally