Sync WPT with upstream (21-09-2025) (#39414)

Automated downstream sync of changes from upstream as of 21-09-2025
[no-wpt-sync]

---------

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>
Signed-off-by: Euclid Ye <yezhizhenjiakang@gmail.com>
Co-authored-by: Euclid Ye <yezhizhenjiakang@gmail.com>
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Servo WPT Sync 2025-09-21 07:47:33 +02:00 committed by GitHub
parent 77ae3a0eb3
commit 016524bd3c
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716 changed files with 12167 additions and 4567 deletions

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@ -13,3 +13,30 @@
[Defaults in mixin parameters]
expected: FAIL
[Too few parameters and no default ignores mixin]
expected: FAIL
[Fallback is ignored if argument is given]
expected: FAIL
[Fallback is used with no parameter and no default]
expected: FAIL
[env() can be accessed from attributes]
expected: FAIL
[env() resolves typed parameters]
expected: FAIL
[env() refuses illegal syntax parameters, but does not fail entire mixin]
expected: FAIL
[env() can access parameters from outer mixins]
expected: FAIL
[env() works inside if, in condition and true branch]
expected: FAIL
[env() works inside if, in condition and false branch]
expected: FAIL