[FIR] Fix overloading of renamed jvm methods

#KT-48102 Fixed

idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/diagnostic/compiler/based/DiagnosisCompilerTestFE10TestdataTestGenerated.java

@@ -7495,6 +7495,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                 runTest("compiler/testData/diagnostics/tests/declarationChecks/localVariablesWithTypeParameters_1_4.kt");
             }
 
+            @Test
+            @TestMetadata("mappedFunctionNotImplemented.kt")
+            public void testMappedFunctionNotImplemented() throws Exception {
+                runTest("compiler/testData/diagnostics/tests/declarationChecks/mappedFunctionNotImplemented.kt");
+            }
+
             @Test
             @TestMetadata("mulitpleVarargParameters.kt")
             public void testMulitpleVarargParameters() throws Exception {

idea/idea-frontend-fir/testData/memberScopeByFqName/java.lang.String.txt

@@ -110,32 +110,6 @@ KtFirFunctionSymbol:
   valueParameters: []
   visibility: Public
 
-KtFirFunctionSymbol:
-  annotatedType: [] kotlin/Char
-  annotationClassIds: []
-  annotations: []
-  callableIdIfNonLocal: java/lang/String.charAt
-  dispatchType: java/lang/String
-  hasStableParameterNames: false
-  isExtension: false
-  isExternal: false
-  isInfix: false
-  isInline: false
-  isOperator: false
-  isOverride: false
-  isStatic: false
-  isSuspend: false
-  modality: OPEN
-  name: charAt
-  origin: JAVA
-  receiverType: null
-  symbolKind: MEMBER
-  typeParameters: []
-  valueParameters: [
-    KtFirValueParameterSymbol(p0)
-  ]
-  visibility: Public
-
 KtFirFunctionSymbol:
   annotatedType: [] kotlin/Int
   annotationClassIds: []
@@ -1511,9 +1485,9 @@ KtFirFunctionSymbol:
   annotatedType: [] kotlin/Char
   annotationClassIds: []
   annotations: []
-  callableIdIfNonLocal: kotlin/CharSequence.get
-  dispatchType: @EnhancedNullability kotlin/CharSequence
-  hasStableParameterNames: true
+  callableIdIfNonLocal: java/lang/String.get
+  dispatchType: java/lang/String
+  hasStableParameterNames: false
   isExtension: false
   isExternal: false
   isInfix: false
@@ -1522,14 +1496,14 @@ KtFirFunctionSymbol:
   isOverride: false
   isStatic: false
   isSuspend: false
-  modality: ABSTRACT
+  modality: OPEN
   name: get
-  origin: LIBRARY
+  origin: JAVA
   receiverType: null
   symbolKind: MEMBER
   typeParameters: []
   valueParameters: [
-    KtFirValueParameterSymbol(index)
+    KtFirValueParameterSymbol(p0)
   ]
   visibility: Public