[FIR2IR] Treat delegated functions as fake-overrides

Delegated callables in FIR are session-dependant (as fake-overrides),
  so it's incorrect to use their FIR as a key for declaration storage.
  Pair of original function and owner lookup tag should be used instead

^KT-62671 Fixed

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java

@@ -24147,6 +24147,12 @@ public class FirJsCodegenBoxTestGenerated extends AbstractFirJsCodegenBoxTest {
                     runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/constructor.kt");
                 }
 
+                @Test
+                @TestMetadata("defaultArgumentInDelegatedFunction.kt")
+                public void testDefaultArgumentInDelegatedFunction() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/defaultArgumentInDelegatedFunction.kt");
+                }
+
                 @Test
                 @TestMetadata("delegatedExpectedInterface.kt")
                 public void testDelegatedExpectedInterface() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsES6CodegenBoxTestGenerated.java

@@ -24147,6 +24147,12 @@ public class FirJsES6CodegenBoxTestGenerated extends AbstractFirJsES6CodegenBoxT
                     runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/constructor.kt");
                 }
 
+                @Test
+                @TestMetadata("defaultArgumentInDelegatedFunction.kt")
+                public void testDefaultArgumentInDelegatedFunction() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/defaultArgumentInDelegatedFunction.kt");
+                }
+
                 @Test
                 @TestMetadata("delegatedExpectedInterface.kt")
                 public void testDelegatedExpectedInterface() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java

@@ -24147,6 +24147,12 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
                     runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/constructor.kt");
                 }
 
+                @Test
+                @TestMetadata("defaultArgumentInDelegatedFunction.kt")
+                public void testDefaultArgumentInDelegatedFunction() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/defaultArgumentInDelegatedFunction.kt");
+                }
+
                 @Test
                 @TestMetadata("delegatedExpectedInterface.kt")
                 public void testDelegatedExpectedInterface() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java

@@ -24147,6 +24147,12 @@ public class IrJsES6CodegenBoxTestGenerated extends AbstractIrJsES6CodegenBoxTes
                     runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/constructor.kt");
                 }
 
+                @Test
+                @TestMetadata("defaultArgumentInDelegatedFunction.kt")
+                public void testDefaultArgumentInDelegatedFunction() throws Exception {
+                    runTest("compiler/testData/codegen/box/multiplatform/k2/defaultArguments/defaultArgumentInDelegatedFunction.kt");
+                }
+
                 @Test
                 @TestMetadata("delegatedExpectedInterface.kt")
                 public void testDelegatedExpectedInterface() throws Exception {