fix: improve error catching of injected user scripts

[ACTCD]

• Fix async error not caught introduced by feat: supports top-level await and namespace isolation #750

• Fix errors may not show up in console when injecting page context

  • For example, the page script prevented the default event:

    window.addEventListener('unhandledrejection', (event) => {
        event.stopImmediatePropagation();
        event.preventDefault();
    });

• Fix the sourceURL resource not show up when the script name contains quotation marks