[FIR] Fix Disappeared CONTRACT_NOT_ALLOWED

https://youtrack.jetbrains.com/issue/KT-60004/K2-Disappeared-CONTRACTNOTALLOWED

Merge-request: KT-MR-12613
Merged-by: Vladimir Sukharev <Vladimir.Sukharev@jetbrains.com>

compiler/tests-spec/testData/diagnostics/notLinked/contracts/declarations/contractBuilder/common/neg/14.fir.kt

@@ -33,7 +33,7 @@ inline fun case_3(block: () -> Unit) {
 
 // TESTCASE NUMBER: 4
 inline fun case_4(block: () -> Unit) {
-    (contract {
+    (<!CONTRACT_NOT_ALLOWED!>contract<!> {
         callsInPlace(block, InvocationKind.EXACTLY_ONCE)
     })
     return block()
@@ -41,7 +41,7 @@ inline fun case_4(block: () -> Unit) {
 
 // TESTCASE NUMBER: 5
 inline fun case_5(block: () -> Unit) {
-    test@ contract {
+    test@ <!CONTRACT_NOT_ALLOWED!>contract<!> {
         callsInPlace(block, InvocationKind.EXACTLY_ONCE)
     }
     return block()