Add referrer to navigation fetch request
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Implement step 13 of [following hyperlinks](https://html.spec.whatwg.org/#following-hyperlinks-2) and step 14.3 of [window open](https://html.spec.whatwg.org/#window-open-steps), as well as other referrer- and fetch-related updates.
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- [x] These changes fix#22890 (GitHub issue number if applicable)
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Magicleap package fixes
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A couple of fixes for magicleap packaging...
* Move the setting of the debuggable flag into the `.package` file where it belongs,
* Allow compiling with v0.20.0 of the SDK.
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- [X] These changes do not require tests because it fixes the build
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