[FIR] Fix tests (ARGUMENT_TYPE_MISMATCH instead of INCOMPATIBLE_CANDIDATE)

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/ThisSuper.fir.kt

@@ -8,14 +8,14 @@ class Derived : Base() {
     fun foo() {
         val x: Int? = null
 
-        super.<!INAPPLICABLE_CANDIDATE!>bar<!>(x)
-        this.<!INAPPLICABLE_CANDIDATE!>baz<!>(x)
+        super.bar(<!ARGUMENT_TYPE_MISMATCH!>x<!>)
+        this.baz(<!ARGUMENT_TYPE_MISMATCH!>x<!>)
         if (x == null) return
         super.bar(x)
         this.baz(x)
 
         val y: Int? = null
         if (y != null) super.bar(this.baz(y))
-        else this.baz(super.<!INAPPLICABLE_CANDIDATE!>bar<!>(y))
+        else this.baz(super.bar(<!ARGUMENT_TYPE_MISMATCH!>y<!>))
     }
 }