K2: add ACCIDENTAL_OVERRIDE_CLASH_BY_JVM_SIGNATURE for clashing functions

This diagnostic is reported on an explicitly-declared function which
overrides a regular Java function with the same signature as a hidden
one from the same scope.

#KT-64846 Fixed

compiler/testData/diagnostics/tests/j+k/collectionOverrides/charAtAndOverload.diag.txt

@@ -0,0 +1 @@
+

compiler/testData/diagnostics/tests/j+k/collectionOverrides/charAtAndOverload.fir.diag.txt

@@ -0,0 +1,2 @@
+/main.kt:(78,81): error: This function accidentally overrides both 'public open operator fun /A.get(index: kotlin/Int): kotlin/Char' and a renamed function 'public open fun /A.charAt(index: kotlin/Int): kotlin/Char' from JVM point of view because of mixed Java/Kotlin hierarchy.
+This situation provokes a JVM clash and thus is forbidden. To fix it, you have to delete either this function or one of overridden functions.

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

@@ -1,4 +1,5 @@
 // SCOPE_DUMP: KA:get
+// RENDER_DIAGNOSTICS_FULL_TEXT
 
 // FILE: A.java
 abstract public class A implements CharSequence {
@@ -17,7 +18,7 @@ abstract public class A implements CharSequence {
 
 // FILE: main.kt
 abstract class KA : A() {
-    override fun get(index: Int) = 'O'
+    override fun <!ACCIDENTAL_OVERRIDE_CLASH_BY_JVM_SIGNATURE!>get<!>(index: Int) = 'O'
 }
 
 fun foo(a: A, ka: KA) {

compiler/testData/diagnostics/tests/j+k/collectionOverrides/charAtAndOverload.kt

@@ -1,4 +1,5 @@
 // SCOPE_DUMP: KA:get
+// RENDER_DIAGNOSTICS_FULL_TEXT
 
 // FILE: A.java
 abstract public class A implements CharSequence {

compiler/testData/diagnostics/tests/j+k/collectionOverrides/containsAndOverload.diag.txt

@@ -0,0 +1,12 @@
+/main.kt:18:16: error: the integer literal does not conform to the expected type String!
+    a.contains(1)
+               ^
+/main.kt:20:5: error: the integer literal does not conform to the expected type String!
+    1 in a
+    ^
+/main.kt:23:17: error: the integer literal does not conform to the expected type String
+    ka.contains(1)
+                ^
+/main.kt:25:5: error: the integer literal does not conform to the expected type String
+    1 in ka
+    ^

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

@@ -0,0 +1,10 @@
+/main.kt:(70,78): error: This function accidentally overrides both 'public open operator fun /A.contains(x: kotlin/String!): kotlin/Boolean' and a function with erased parameters 'public open operator fun /A.contains(x: kotlin/Any!): kotlin/Boolean' from JVM point of view because of mixed Java/Kotlin hierarchy.
+This situation provokes a JVM clash and thus is forbidden. To fix it, you have to delete either this function or one of overridden functions.
+
+/main.kt:(159,160): error: Argument type mismatch: actual type is 'kotlin.Int', but 'kotlin.String!' was expected.
+
+/main.kt:(178,179): error: Argument type mismatch: actual type is 'kotlin.Int', but 'kotlin.String!' was expected.
+
+/main.kt:(222,223): error: Argument type mismatch: actual type is 'kotlin.Int', but 'kotlin.String' was expected.
+
+/main.kt:(242,243): error: Argument type mismatch: actual type is 'kotlin.Int', but 'kotlin.String' was expected.

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

@@ -1,5 +1,6 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE -PARAMETER_NAME_CHANGED_ON_OVERRIDE
 // SCOPE_DUMP: KA:contains
+// RENDER_DIAGNOSTICS_FULL_TEXT
 
 // FILE: A.java
 abstract public class A implements java.util.Collection<String> {
@@ -9,7 +10,7 @@ abstract public class A implements java.util.Collection<String> {
 
 // FILE: main.kt
 abstract class KA : A() {
-    override fun contains(x: String) = false
+    override fun <!ACCIDENTAL_OVERRIDE_CLASH_BY_JVM_SIGNATURE!>contains<!>(x: String) = false
 }
 
 fun foo(a: A, ka: KA) {

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

@@ -1,5 +1,6 @@
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_VARIABLE -PARAMETER_NAME_CHANGED_ON_OVERRIDE
 // SCOPE_DUMP: KA:contains
+// RENDER_DIAGNOSTICS_FULL_TEXT
 
 // FILE: A.java
 abstract public class A implements java.util.Collection<String> {

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

@@ -146,7 +146,7 @@ public class X implements java.util.List<String> {
 
 class Y : X()
 class Y2 : X() {
-    override fun removeAt(index: Int) = ""
+    override fun <!ACCIDENTAL_OVERRIDE_CLASH_BY_JVM_SIGNATURE!>removeAt<!>(index: Int) = ""
 }
 
 fun main() {