ASAN: Module tests commonly fail to free memory.

[Penguinwizzard]

There are a number of ES6 module tests that fail to free memory appropriately. This appears to be due to WScriptJSRT not freeing the source code of modules it loads. The affected tests have been marked as exclude_sanitize_address for now in PR #2730 to allow ASAN CI to be enabled. These tests are:

• moduletest1.js
• moduletest2.js
• module-syntax.js
• module-syntax1.js
• module-functionality.js
• module-syntax.js (force:deferparse)
• module-syntax1.js (force:deferparse)
• module-namespace.js
• test_bug_2645.js
• bug_issue_3076.js

Note: This may be an API issue; an (admittedly cursory) look around the APIs related to JsParseModuleSource didn't reveal an easy way to register a finalize callback.

[akroshg]

Fixes are merged.