All the `appearance: auto` declarations on `input[type=X]`, `::file-selector-button` or `select[...]` are redundant since `input` and `select` already have an `appearance: auto` rule. I missed that during review :(
Pull Request: https://github.com/WebKit/WebKit/pull/907
Committed r294633 (250859@main): <https://commits.webkit.org/250859@main> Reviewed commits have been landed. Closing PR #907 and removing active labels.
<rdar://problem/93751842>