Adjust testData to new labels syntax

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/commentsInDeadCode.kt

@@ -12,7 +12,7 @@ fun test2() {
     <!UNREACHABLE_CODE!>bar(<!>11, todo()/*comment1*/, <!UNREACHABLE_CODE!>""/*comment2*/)<!>
 }
 fun test3() {
-    <!UNREACHABLE_CODE!>bar(<!>11, @l(todo()/*comment*/), <!UNREACHABLE_CODE!>"")<!>
+    <!UNREACHABLE_CODE!>bar(<!>11, l@(todo()/*comment*/), <!UNREACHABLE_CODE!>"")<!>
 }
 
 fun todo() = throw Exception()

compiler/testData/diagnostics/tests/controlFlowAnalysis/deadCode/kt5200DeadCodeInLambdas.kt

@@ -1,7 +1,7 @@
 //KT-5200 Mark unreachable code in lambdas
 
 fun test1(): String {
-    doCall @local {
+    doCall local@ {
         throw NullPointerException()
         <!UNREACHABLE_CODE!>"b3"<!> //unmarked
     }
@@ -10,7 +10,7 @@ fun test1(): String {
 }
 
 fun test2(nonLocal: String, b: Boolean): String {
-    doCall @local {
+    doCall local@ {
         if (b) {
             return@local "b1"
         } else {