Report error if fun interface method has JVM name getFunctionDelegate

This is needed so that it wouldn't clash with the corresponding member
from the kotlin/jvm/internal/FunctionAdapter interface, which all fun
interface wrappers will implement to get proper equals/hashCode. The
workaround is to rename the fun interface method.

 #KT-33455

compiler/fir/analysis-tests/tests/org/jetbrains/kotlin/fir/FirOldFrontendDiagnosticsTestGenerated.java

@@ -7944,6 +7944,11 @@ public class FirOldFrontendDiagnosticsTestGenerated extends AbstractFirOldFronte
             runTest("compiler/testData/diagnostics/tests/funInterface/funIsNotInheritedFromBaseInterface.kt");
         }
 
+        @TestMetadata("functionDelegateClashOnJvm.kt")
+        public void testFunctionDelegateClashOnJvm() throws Exception {
+            runTest("compiler/testData/diagnostics/tests/funInterface/functionDelegateClashOnJvm.kt");
+        }
+
         @TestMetadata("genericSubstitutionForFunInterface.kt")
         public void testGenericSubstitutionForFunInterface() throws Exception {
             runTest("compiler/testData/diagnostics/tests/funInterface/genericSubstitutionForFunInterface.kt");