Fix panic when running test-background-fetch-permission.html
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* Propagate `Error::JSFailed` in `Permissions::create_descriptor`
* In `Error::to_jsval`, only check if a JS exception is not pending if `self` is not `Error::JSFailed`
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Clipboard refactoring
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This PR removes clipboard handling from the constellation. Instead, now embedder handles it.
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Add DOMMatrix.prototype.scaleNonUniform
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Implements `scaleNonUniform()` [per the spec](https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-scalenonuniform).
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Support DOMMatrix string constructor
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Implemented DOMMatrix string constructor per [the spec](https://drafts.fxtf.org/geometry/#dom-dommatrixreadonly-dommatrixreadonly).
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Add domain_lookup_start functionality
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Added the domain_lookup_start functionality in http_loader.rs (http_redirect_fetch function)
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Remove wpt tests for domainLookupStart
Set ResourceAttribute::DomainLookupTime
Move DomainLookupStart timing before HTTP request initialization
Change label of domainLookupStart TAO zero test to PASS
Adjust the from_resource_timing method to initialize domain_lookup_start value
Restore domainLookupsStart test
Let resources timing entries be added to performance entry buffer.
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Update relevant tests to properly report and expect failure.
These changes are the first step for #23328. Not sure if I would say they _fix_ the issue.
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Implement Status WebDriver command
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Fix panic on opening a directory
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Continued from https://github.com/servo/servo/pull/23548
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Implement GetPageSource WebDriver command
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Enable cookies related wdspec tests
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