FIR2IR: correct IR origin for substitution overrides

#KT-44054 Fixed

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt

@@ -1155,7 +1155,7 @@ class Fir2IrDeclarationStorage(
         parentOrigin: IrDeclarationOrigin,
         irParent: IrDeclarationParent?
     ): IrDeclarationOrigin {
-        return if (irParent.isSourceClass() && symbol.fir.isIntersectionOverride)
+        return if (irParent.isSourceClass() && (symbol.fir.isIntersectionOverride || symbol.fir.isSubstitutionOverride))
             IrDeclarationOrigin.FAKE_OVERRIDE
         else
             parentOrigin

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/codegen/ir/FirBlackBoxCodegenTestGenerated.java

@@ -19869,6 +19869,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/objects/simpleObject.kt");
         }
 
+        @TestMetadata("substitutionFunctionFromSuper.kt")
+        public void testSubstitutionFunctionFromSuper() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/substitutionFunctionFromSuper.kt");
+        }
+
         @TestMetadata("thisInConstructor.kt")
         public void testThisInConstructor() throws Exception {
             runTest("compiler/testData/codegen/box/objects/thisInConstructor.kt");