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

#KT-11957 Fixed

idea/idea-completion/testData/keywords/AfterTry.kt

@@ -0,0 +1,13 @@
+fun foo() {
+    try {
+
+    }
+    <caret>
+}
+
+// EXIST: catch
+// EXIST: finally
+// EXIST: false
+// EXIST: null
+// EXIST: true
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/AfterTryCatch.kt

@@ -0,0 +1,32 @@
+fun foo() {
+    try {
+
+    }
+    catch(e: Exception) {
+
+    }
+    <caret>
+}
+
+// EXIST: catch
+// EXIST: finally
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: super
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// EXIST: as
+// NOTHING_ELSE

idea/idea-completion/testData/keywords/AfterTryFinally.kt

@@ -0,0 +1,29 @@
+fun foo() {
+    try {
+
+    }
+    finally {
+
+    }
+    <caret>
+}
+
+// EXIST: class
+// EXIST: do
+// EXIST: false
+// EXIST: for
+// EXIST: fun
+// EXIST: if
+// EXIST: null
+// EXIST: object
+// EXIST: return
+// EXIST: super
+// EXIST: throw
+// EXIST: interface
+// EXIST: true
+// EXIST: try
+// EXIST: val
+// EXIST: var
+// EXIST: when
+// EXIST: while
+// NOTHING_ELSE