[K2/N] Insert asserts to reveal wrongly recursive Fir2IrLazy*.overriddenSymbols

^KT-58459
[Merge-request: KT-MR-9962
Merged-by: Vladimir Sukharev <Vladimir.Sukharev@jetbrains.com>

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/FirObjCInterop.kt

@@ -51,6 +51,7 @@ internal fun FirFunction.getObjCMethodInfoFromOverriddenFunctions(session: FirSe
                 // call of `processFunctionsByName()` is needed only for necessary side-effect before `getDirectOverriddenFunctions` call
                 unsubstitutedScope.processFunctionsByName(symbol.name) {}
                 unsubstitutedScope.getDirectOverriddenFunctions(symbol).firstNotNullOfOrNull {
+                    assert(it.fir != this) { "Function ${symbol.name}() is wrongly contained in its own getDirectOverriddenFunctions" }
                     it.fir.getObjCMethodInfoFromOverriddenFunctions(session, scopeSession)
                 }
             }

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ObjCInterop.kt

@@ -179,7 +179,10 @@ private fun IrSimpleFunction.getObjCMethodInfo(onlyExternal: Boolean): ObjCMetho
         }
     }
 
-    return overriddenSymbols.firstNotNullOfOrNull { it.owner.getObjCMethodInfo(onlyExternal) }
+    return overriddenSymbols.firstNotNullOfOrNull {
+        assert(it.owner != this) { "Function ${it.owner.descriptor.fqNameSafe}() is wrongly contained in its own overriddenSymbols"}
+        it.owner.getObjCMethodInfo(onlyExternal)
+    }
 }
 
 fun FunctionDescriptor.getExternalObjCMethodInfo(): ObjCMethodInfo? = this.getObjCMethodInfo(onlyExternal = true)