[FIR] Fix tests (ARGUMENT_TYPE_MISMATCH instead of INCOMPATIBLE_CANDIDATE)

compiler/testData/diagnostics/tests/unitConversion/chainedFunSuspendUnitConversion.fir.kt

@@ -12,7 +12,7 @@ fun bar(): String = ""
 abstract class SubInt : () -> Int
 
 fun test(f: () -> String, s: SubInt) {
-    <!INAPPLICABLE_CANDIDATE!>foo<!>(f)
-    <!INAPPLICABLE_CANDIDATE!>foo<!>(s)
+    foo(<!ARGUMENT_TYPE_MISMATCH!>f<!>)
+    foo(<!ARGUMENT_TYPE_MISMATCH!>s<!>)
     foo(::bar)
 }