Enable upstream bluetooth tests
I enabled bluetooth WPT tests
But I'm still worry that a lot of tests failed (more than 150). I decreased them by
```
prefs: ["dom.bluetooth.enabled:true"]
```
But it's still a lot of failed tests
Checks
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#20437 (GitHub issue number if applicable)
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Fix DuckDuckGo HTML search
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#22090
- [x] There are tests for these changes
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Make desktop webdriver WPT harness work
This change allows me to run `./mach test-wpt --product servodriver --no-pause-after-test tests/wpt/mozilla/tests/mozilla/DOMParser.html` successfully again.
---
- [x] `./mach build -d` does not report any errors
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- [x] These changes fix#22409
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Kill test processes whenever any error occurs
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- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix#21822
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Implement rejectionhandled event
---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix#22006 .
- [x] There are more tests `PASS`ed for these changes
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