Adjust testData to new labels syntax

idea/testData/checker/BreakContinue.kt

@@ -1,8 +1,8 @@
 class C {
 
     fun f (<warning>a</warning> : Boolean, <warning>b</warning> : Boolean) {
-        @b (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
-          @a {
+        b@ (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
+          a@ {
             <error>break@f</error>
             break
             break@b
@@ -11,8 +11,8 @@ class C {
 
         <error>continue</error>
 
-        @b (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
-          @a {
+        b@ (<error descr="[EXPRESSION_EXPECTED] While is not an expression, and only expressions are allowed here">while (true)
+          a@ {
             <error>continue@f</error>
             continue
             continue@b

idea/testData/checker/FunctionReturnTypes.kt

@@ -6,7 +6,7 @@ fun unitEmptyReturn() : Unit {return}
 fun unitIntReturn() : Unit {return <error>1</error>}
 fun unitUnitReturn() : Unit {return Unit}
 fun test1() : Any = { <error>return</error> }
-fun test2() : Any = @a {return@a 1}
+fun test2() : Any = a@ {return@a 1}
 fun test3() : Any { <error>return</error> }
 
 fun bbb() {

idea/testData/checker/QualifiedThisInClosures.kt

@@ -8,9 +8,9 @@
         fun Char.xx() : Double.() -> Unit {
           this : Char
           val <warning>a</warning>: Double.() -> Unit = { this : Double + this@xx : Char}
-          val <warning>b</warning>: Double.() -> Unit = @a{this@a : Double + this@xx : Char}
-          val <warning>c</warning> = @a{<error>this@a</error> <error>+</error> this@xx : Char}
-          return (@a{this@a : Double + this@xx : Char})
+          val <warning>b</warning>: Double.() -> Unit = a@{this@a : Double + this@xx : Char}
+          val <warning>c</warning> = a@{<error>this@a</error> <error>+</error> this@xx : Char}
+          return (a@{this@a : Double + this@xx : Char})
         }
       }
     }