refactor(tools): Tidy up core component files copyright ignore

Some files that should have their copyrights checked are still placed on the
copyright ignore list.

- These entries have been tidied up
- Copyrights of those files have been updated.

components/heap/test_multi_heap_host/test_multi_heap.cpp

@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
 #include "catch.hpp"
 #include "multi_heap.h"