JVM IR: do not attempt to mangle function expressions

For some reasons, lambdas and function expressions are represented
slightly differently in psi2ir. Lambdas are translated to a block with a
function of origin LOCAL_FUNCTION_FOR_LAMBDA and name "<anonymous>", but
function expressions are translated to a block with DEFINED function
"<no name provided>".

Tweak the condition for detecting local functions a bit, to avoid
similar situation in the future if we add some other origins for local
functions.

 #KT-48207 Fixed

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

@@ -18606,6 +18606,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/inlineClasses/fieldNameClash.kt");
         }
 
+        @Test
+        @TestMetadata("functionExpression.kt")
+        public void testFunctionExpression() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/functionExpression.kt");
+        }
+
         @Test
         @TestMetadata("genericInlineClassSynthMembers.kt")
         public void testGenericInlineClassSynthMembers() throws Exception {