[FE 1.0] Fix remaining codegen spec tests

compiler/tests-spec/testData/codegen/box/linked/expressions/constant-literals/boolean-literals/p-1/pos/2.1.kt

@@ -18,6 +18,7 @@ internal open class A: `true`() {
     val x2 = false
 }
 
+@Target(AnnotationTarget.CLASS, AnnotationTarget.TYPE)
 annotation class `false`(val x2: Boolean)
 
 @`false`(false) internal class B: @`false`(false) A() {}
@@ -40,4 +41,4 @@ fun box(): String? {
     if (!checkClassName(`true`::class, "true")) return null
 
     return "OK"
-}
+}

compiler/tests-spec/testData/codegen/box/linked/expressions/when-expression/p-4/neg/1.2.exceptions.compiletime.txt

@@ -1 +1 @@
-java.lang.IllegalStateException: NO_ELSE_IN_WHEN: 'when' expression must be exhaustive, add necessary 'false' branch or 'else' branch instead (15,17) in /1.2.kt
+java.lang.IllegalStateException: NO_ELSE_IN_WHEN: 'when' expression must be exhaustive, add necessary 'true', 'false' branches or 'else' branch instead (15,17) in /1.2.kt

compiler/tests-spec/testData/codegen/box/linked/expressions/when-expression/p-4/pos/1.2.kt

@@ -15,6 +15,7 @@ fun box(): String {
         false -> { "NOK" }
         !false -> { "OK" }
         !false -> { "NOK" }
+        else -> { "NOK" }
     }
     return  when2
-}
+}

compiler/tests-spec/testData/codegen/box/linked/overload-resolution/building-the-overload-candidate-set-ocs/operator-call/p-1/pos/2.4.kt

@@ -1,3 +1,4 @@
+// LANGUAGE: -SafeCallsAreAlwaysNullable
 // WITH_RUNTIME
 
 /*
@@ -70,4 +71,4 @@ operator fun B.plusAssign(c: Any?) {
 }
 
 
-class C
+class C

compiler/tests-spec/testData/codegen/box/linked/overload-resolution/building-the-overload-candidate-set-ocs/operator-call/p-1/pos/2.8.kt

@@ -1,3 +1,4 @@
+// LANGUAGE: -SafeCallsAreAlwaysNullable
 // WITH_RUNTIME
 
 /*
@@ -70,4 +71,4 @@ infix operator fun B.plusAssign(c: Any?) {
 }
 
 
-class C
+class C