KT-22274 report warning on labels that can't be referenced

Labels are meaningful only if they can be referenced by 'break',
'continue', or 'return' expressions.

compiler/testData/diagnostics/tests/resolve/nestedCalls/argumentsInParentheses.kt

@@ -14,7 +14,7 @@ fun test(bar: Bar, a: A) {
     // no elements with error types
     fooInt((bar()))
     fooInt(if (true) bar() else bar())
-    fooInt(label@ bar())
+    fooInt(<!REDUNDANT_LABEL_WARNING!>label@<!> bar())
     fooInt(a.bar())
-    fooInt(((label@ if (true) (a.bar()) else bar())))
+    fooInt(((<!REDUNDANT_LABEL_WARNING!>label@<!> if (true) (a.bar()) else bar())))
 }