[FIR] Fix overloading of renamed jvm methods

#KT-48102 Fixed

compiler/testData/diagnostics/tests/declarationChecks/mappedFunctionNotImplemented.kt

@@ -0,0 +1,13 @@
+// KT-48102
+// FIR_IDENTICAL
+
+// FILE: MyCharSequence.java
+public class MyCharSequence implements CharSequence {
+    public char charAt(int index) { return ' '; }
+    public int length() { return 1; }
+    public CharSequence subSequence(int start, int end) { return this; }
+    public String toString() { return " "; }
+}
+
+// FILE: CharSeq.kt
+class KtCharSeq : MyCharSequence() // false-positive 'get' not implemented

compiler/testData/diagnostics/tests/declarationChecks/mappedFunctionNotImplemented.txt

@@ -0,0 +1,21 @@
+package
+
+public final class KtCharSeq : MyCharSequence {
+    public constructor KtCharSeq()
+    public open override /*1*/ /*fake_override*/ val length: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ /*fake_override*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}
+
+public open class MyCharSequence : kotlin.CharSequence {
+    public constructor MyCharSequence()
+    public open override /*1*/ val length: kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public open override /*1*/ fun get(/*0*/ index: kotlin.Int): kotlin.Char
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ fun subSequence(/*0*/ startIndex: kotlin.Int, /*1*/ endIndex: kotlin.Int): kotlin.CharSequence
+    public open override /*1*/ fun toString(): kotlin.String
+}

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

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

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

@@ -1,32 +0,0 @@
-// JAVAC_EXPECTED_FILE
-// FILE: A.java
-abstract public class A extends B {
-    public Integer removeAt(int x) { }
-    public boolean remove(Integer x) { }
-}
-
-// FILE: main.kt
-import java.util.*;
-
-abstract class B : MutableList<Int>, AbstractList<Int>() {
-    override fun removeAt(index: Int): Int = null!!
-    override fun remove(element: Int): Boolean = null!!
-}
-
-abstract class D : AbstractList<Int>() {
-    // removeAt() doesn't exist in java/util/AbstractList, it's a
-    // fake override of the method from kotlin/collections/MutableList
-    override fun removeAt(index: Int): Int = null!!
-    // AbstractList::remove() should return Int here. No fake overrides created.
-    // This may be a bug because the old compiler doesn't report a diagnostic here.
-    override fun remove(element: Int): Boolean = null!!
-}
-
-fun main(a: A, b: B, c: ArrayList<Int>) {
-    a.remove(1)
-    a.<!OVERLOAD_RESOLUTION_AMBIGUITY!>removeAt<!>(0)
-    b.remove(1)
-    b.removeAt(0)
-    c.remove(1)
-    c.removeAt(0)
-}

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

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // JAVAC_EXPECTED_FILE
 // FILE: A.java
 abstract public class A extends B {

compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.fir.kt

@@ -1,24 +0,0 @@
-// KT-1730 Method which has been implemented by Java is recognized to be abstract.
-
-// FILE: C.java
-public class C implements java.lang.CharSequence {
-    @Override
-    public int length() {
-        return 3;
-    }
-    @Override
-    public char charAt(int index) {
-        return 48;
-    }
-    @Override
-    public CharSequence subSequence(int start, int end) {
-        return "ab";
-    }
-    @Override
-    public String toString() {
-        return "abc";
-    }
-}
-
-// FILE: T.kt
-<!ABSTRACT_MEMBER_NOT_IMPLEMENTED!>class T<!> : C()

compiler/testData/diagnostics/tests/j+k/kt1730_implementCharSequence.kt

@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // KT-1730 Method which has been implemented by Java is recognized to be abstract.
 
 // FILE: C.java