FIR checker: skip error named reference if receiver is unresolved

Currently, FIR reports errors caused by previous resolution failure. For
example with unresolved `a` and `b` in code `a.b`, both `a` and `b` are
highlighted. FE1.0 only highlights `a` since it's the root cause. This
change applies this heuristics when reporting FirDiagnostics.

compiler/testData/diagnostics/tests/inline/nonPublicMember/kt14887.fir.kt

@@ -1,6 +1,6 @@
 inline fun foo() {
-    <!UNRESOLVED_REFERENCE!>unresolved<!>().<!UNRESOLVED_REFERENCE!>another<!>
-    <!UNRESOLVED_REFERENCE!>unresolved<!>().<!UNRESOLVED_REFERENCE!>another<!>()
+    <!UNRESOLVED_REFERENCE!>unresolved<!>().another
+    <!UNRESOLVED_REFERENCE!>unresolved<!>().another()
 }
 
 fun main() {