K2: add more tests about false overrides

Related to KT-53197

compiler/testData/ir/irText/firProblems/internalPotentialOverride.kt.txt

@@ -12,6 +12,10 @@ open class A {
     return 1
   }
 
+  internal open val bar: Int
+    field = 1
+    internal open get
+
 }
 
 // MODULE: m2
@@ -28,4 +32,8 @@ class B : A {
     return "OK"
   }
 
+  val bar: Int
+    field = 2
+    get
+
 }