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/testsWithStdLib/contracts/dsl/errors/recursiveContractCustomContractFunction.fir.kt

@@ -32,7 +32,7 @@ fun case4() {
             run {
                 <!UNRESOLVED_REFERENCE!>s<!> = "hello"
             }
-            <!UNRESOLVED_REFERENCE!>s<!>.<!UNRESOLVED_REFERENCE!>length<!>
+            <!UNRESOLVED_REFERENCE!>s<!>.length
         }
     }
 }

compiler/testData/diagnostics/testsWithStdLib/coroutines/kt18292.fir.kt

@@ -14,6 +14,6 @@ suspend fun fib(n: Long) =
     async {
         when {
             n < 2 -> n
-            else -> fib(n - 1).<!UNRESOLVED_REFERENCE!>await<!>() <!AMBIGUITY!>+<!> fib(n - 2).<!UNRESOLVED_REFERENCE!>await<!>()
+            else -> fib(n - 1).<!UNRESOLVED_REFERENCE!>await<!>() + fib(n - 2).<!UNRESOLVED_REFERENCE!>await<!>()
         }
     }

compiler/testData/diagnostics/testsWithStdLib/kt9078.fir.kt

@@ -3,7 +3,7 @@ abstract class KFunctionKt9005WorkAround<out R: Any?>(private val _functionInsta
     private val _reflectedFunction: kotlin.reflect.KFunction<R> = _functionInstance.<!UNRESOLVED_REFERENCE!>reflect<!>() ?: throw IllegalStateException("")
 
     private val _parameters: List<kotlin.reflect.KParameter> = run {
-        _functionInstance.javaClass.methods.first().<!UNRESOLVED_REFERENCE!>parameters<!>.<!AMBIGUITY!>map<!> {
+        _functionInstance.javaClass.methods.first().<!UNRESOLVED_REFERENCE!>parameters<!>.map {
             <!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>object<!> : kotlin.reflect.KParameter {
                 override val index: Int = 0
             }