Resolve parenthesized element as expression

idea/testData/checker/BreakContinue.kt

@@ -1,23 +1,23 @@
 class C {
 
     fun f (<warning>a</warning> : Boolean, <warning>b</warning> : Boolean) {
-        @b (while (true)
+        @b (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
           @a {
             <error>break@f</error>
             break
-            <warning>break@b</warning>
+            break@b
             <error>break@a</error>
-          })
+          }</error>)
 
         <error>continue</error>
 
-        @b (while (true)
+        @b (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
           @a {
             <error>continue@f</error>
             continue
-            <warning>continue@b</warning>
+            continue@b
             <error>continue@a</error>
-          })
+          }</error>)
 
         <error>break</error>
 

idea/testData/quickfix/suppress/forStatement/afterAssign.kt

@@ -1,4 +1,5 @@
 // "Suppress 'UNNECESSARY_NOT_NULL_ASSERTION' for statement " "true"
+// ERROR: Assignments are not expressions, and only expressions are allowed in this context
 
 fun foo() {
     var x = 0

idea/testData/quickfix/suppress/forStatement/beforeAssign.kt

@@ -1,4 +1,5 @@
 // "Suppress 'UNNECESSARY_NOT_NULL_ASSERTION' for statement " "true"
+// ERROR: Assignments are not expressions, and only expressions are allowed in this context
 
 fun foo() {
     var x = 0