Respect explicit api mode state when generating actual declarations

#KT-44067 Fixed

idea/testData/multiModuleQuickFix/createActualExplicitApi/function/header/header.kt

@@ -0,0 +1,4 @@
+// "Create actual function for module testModule_JVM (JVM)" "true"
+// COMPILER_ARGUMENTS: -Xexplicit-api=strict
+
+public expect fun <caret>foo(arg: Int): String

idea/testData/multiModuleQuickFix/createActualExplicitApi/function/header/header.kt.after

@@ -0,0 +1,4 @@
+// "Create actual function for module testModule_JVM (JVM)" "true"
+// COMPILER_ARGUMENTS: -Xexplicit-api=strict
+
+public expect fun foo(arg: Int): String

idea/testData/multiModuleQuickFix/createActualExplicitApi/function/jvm/foo.kt

@@ -0,0 +1 @@
+// foo: to be implemented

idea/testData/multiModuleQuickFix/createActualExplicitApi/function/jvm/foo.kt.after

@@ -0,0 +1,4 @@
+// foo: to be implemented
+public actual fun foo(arg: Int): String {
+    TODO("Not yet implemented")
+}