[NI] Improve diagnostic about unresolved receiver for many candidates

compiler/testData/diagnostics/tests/inference/reportingImprovements/reportUnresolvedReferenceWrongReceiverForManyCandidates.kt

@@ -0,0 +1,8 @@
+fun test() {
+    val <!UNUSED_VARIABLE!>a<!> = <!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>-<!>false
+}
+
+operator fun A.unaryMinus() {}
+operator fun B.unaryMinus() {}
+class A
+class B

compiler/testData/diagnostics/tests/inference/reportingImprovements/reportUnresolvedReferenceWrongReceiverForManyCandidates.txt

@@ -0,0 +1,19 @@
+package
+
+public fun test(): kotlin.Unit
+public operator fun A.unaryMinus(): kotlin.Unit
+public operator fun B.unaryMinus(): kotlin.Unit
+
+public final class A {
+    public constructor A()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public final class B {
+    public constructor B()
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}