feat(zone.js): patch Utils threading functions

[edusperoni]

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• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
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• Tests for the changes are included.

What is the current behavior?

main thread functions aren't patched

What is the new behavior?

main thread functions are now patched

Fixes/Implements/Closes #[Issue Number].