feat: allow access to host CSSStyleDeclaration via this.style

[nolanlawson]

Details

Same as #4017, but works around Sauce Labs CI issues by avoiding a forked PR.

The original author is @le-incroyable1-dev who is credited in the commit.

Fixes #3999 by adding support for this.style via API versioning (v62+, aka Winter '25+).

Does this pull request introduce a breaking change?

• ✅ No, it does not introduce a breaking change.

Does this pull request introduce an observable change?

• ⚠️ Yes, it does include an observable change.

Yes, but this is added via API versioning.

[le-incroyable1-dev]

Thanks for the credit and all the help 🫠