[FE 1.0] Report a more precise diagnostic when parameter modifiers (vararg) are changed in actualization

^KT-62747 Fixed

compiler/testData/diagnostics/tests/multiplatform/actualClassifierMustHasTheSameMembersAsNonFinalExpectClassifierChecker/changeVarargModifierInOverride.fir.kt

@@ -0,0 +1,16 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+open class Base {
+    <!INCOMPATIBLE_MATCHING{JVM}!>open fun foo(vararg bar: Int) {}<!>
+}
+
+<!INCOMPATIBLE_MATCHING{JVM}!>expect open class Foo : Base {
+}<!>
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual open class Foo : Base() {
+    override fun foo(bar: IntArray) {}
+}

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

@@ -0,0 +1,16 @@
+// MODULE: m1-common
+// FILE: common.kt
+
+open class Base {
+    open fun foo(vararg bar: Int) {}
+}
+
+expect open class Foo : Base {
+}
+
+// MODULE: m2-jvm()()(m1-common)
+// FILE: jvm.kt
+
+actual open <!ACTUAL_CLASSIFIER_MUST_HAVE_THE_SAME_MEMBERS_AS_NON_FINAL_EXPECT_CLASSIFIER_WARNING!>class Foo<!> : Base() {
+    override fun <!VARARG_CHANGED_IN_NON_FINAL_EXPECT_CLASSIFIER_ACTUALIZATION_WARNING!>foo<!>(bar: IntArray) {}
+}