Migrate diagnostic tests to 1.4

compiler/testData/diagnostics/testsWithStdLib/CallToMainRedeclaredInMultiFile.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +WarningOnMainUnusedParameter
+
 // FILE: a.kt
 fun main(args: Array<String>) {}
 

compiler/testData/diagnostics/testsWithStdLib/CallToMainRedeclaredInMultiFile.kt

@@ -1,8 +1,10 @@
+// !LANGUAGE: +WarningOnMainUnusedParameter
+
 // FILE: a.kt
-fun main(args: Array<String>) {}
+fun main(<!UNUSED_PARAMETER!>args<!>: Array<String>) {}
 
 // FILE: b.kt
-fun main(args: Array<String>) {}
+fun main(<!UNUSED_PARAMETER!>args<!>: Array<String>) {}
 
 // FILE: c.kt
 fun foo() { <!OVERLOAD_RESOLUTION_AMBIGUITY!>main<!>(arrayOf("a", "b")) }

compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.fir.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: -ProhibitConcurrentHashMapContains
 // !WITH_NEW_INFERENCE
 // FULL_JDK
 

compiler/testData/diagnostics/testsWithStdLib/java/concurrentHashMapContains.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: -ProhibitConcurrentHashMapContains
 // !WITH_NEW_INFERENCE
 // FULL_JDK