KMP: Put "prohibit member scope mismatch for non-final expect" under the flag

^KT-61668 Fixed

Review: https://jetbrains.team/p/kt/reviews/12062/timeline

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/memberScopeMismatch_oldLanguageVersion.kt

@@ -0,0 +1,19 @@
+// FIR_IDENTICAL
+// LANGUAGE: -MultiplatformRestrictions
+// MODULE: m1-common
+// FILE: common.kt
+
+expect open class Foo {
+    fun existingMethod()
+    val existingParam: Int
+}
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual open class Foo {
+    actual fun existingMethod() {}
+    actual val existingParam: Int = 904
+
+    fun injectedMethod() {}
+}