Added check for incompatible variance modifiers and repeated modifiers

compiler/testData/diagnostics/tests/declarationChecks/propertyInPackageHasNoInheritVisibility.kt

@@ -4,4 +4,7 @@ package d
 
 fun test() {
     f()
-}
+}
+
+var g: Int = 1
+    <!PACKAGE_MEMBER_CANNOT_BE_PROTECTED!>protected<!> set(i: Int) {}

compiler/testData/diagnostics/tests/declarationChecks/propertyInPackageHasNoInheritVisibility.txt

@@ -2,5 +2,6 @@ package
 
 package d {
     internal val f: () -> kotlin.Int
+    internal var g: kotlin.Int
     internal fun test(): kotlin.Unit
 }