FIR: Preserve non-custom attributes after substitution

The test is being fixed since synthetic call for elvis has @Exact-attribute on return type

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

@@ -14112,6 +14112,12 @@ public class DiagnosisCompilerTestFE10TestdataTestGenerated extends AbstractDiag
                     runTest("compiler/testData/diagnostics/tests/inference/commonSystem/dontCaptureTypeVariable.kt");
                 }
 
+                @Test
+                @TestMetadata("exactOnElvis.kt")
+                public void testExactOnElvis() throws Exception {
+                    runTest("compiler/testData/diagnostics/tests/inference/commonSystem/exactOnElvis.kt");
+                }
+
                 @Test
                 @TestMetadata("fixVariablesInRightOrder.kt")
                 public void testFixVariablesInRightOrder() throws Exception {