FIR: rename AMBIGUITY to OVERLOAD_RESOLUTION_AMBIGUITY to match FE 1.0

compiler/testData/diagnostics/tests/j+k/collectionOverrides/collectionStringImpl.fir.kt

@@ -80,6 +80,6 @@ public class CollectionStringImpl implements Collection<String> {
 // FILE: main.kt
 
 fun test(x: CollectionStringImpl) {
-    x.<!AMBIGUITY!>contains<!>("")
+    x.<!OVERLOAD_RESOLUTION_AMBIGUITY!>contains<!>("")
     (x as Collection<String>).contains("")
 }

compiler/testData/diagnostics/tests/j+k/collectionOverrides/containsAndOverload.fir.kt

@@ -12,9 +12,9 @@ abstract class KA : A() {
 }
 
 fun foo(a: A, ka: KA) {
-    a.<!AMBIGUITY!>contains<!>("")
+    a.<!OVERLOAD_RESOLUTION_AMBIGUITY!>contains<!>("")
     a.<!NONE_APPLICABLE!>contains<!>(1)
-    "" <!AMBIGUITY!>in<!> a
+    "" <!OVERLOAD_RESOLUTION_AMBIGUITY!>in<!> a
     1 <!NONE_APPLICABLE!>in<!> a
 
     ka.contains("")

compiler/testData/diagnostics/tests/j+k/collectionOverrides/overridesBuiltinNoMagic.fir.kt

@@ -150,14 +150,14 @@ class Y2 : X() {
 
 fun main() {
     X().remove("")
-    X().<!AMBIGUITY!>removeAt<!>(1)
+    X().<!OVERLOAD_RESOLUTION_AMBIGUITY!>removeAt<!>(1)
 
     val y: MutableList<String> = Y()
     y.removeAt(1)
 
     Y().remove("")
-    Y().<!AMBIGUITY!>removeAt<!>(1)
+    Y().<!OVERLOAD_RESOLUTION_AMBIGUITY!>removeAt<!>(1)
 
     X().remove("")
-    X().<!AMBIGUITY!>removeAt<!>(1)
+    X().<!OVERLOAD_RESOLUTION_AMBIGUITY!>removeAt<!>(1)
 }

compiler/testData/diagnostics/tests/j+k/collectionOverrides/removeAtInt.fir.kt

@@ -24,7 +24,7 @@ abstract class D : AbstractList<Int>() {
 
 fun main(a: A, b: B, c: ArrayList<Int>) {
     a.remove(1)
-    a.<!AMBIGUITY!>removeAt<!>(0)
+    a.<!OVERLOAD_RESOLUTION_AMBIGUITY!>removeAt<!>(0)
     b.remove(1)
     b.removeAt(0)
     c.remove(1)