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

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

---------

Signed-off-by: WPT Sync Bot <[email protected]>
Signed-off-by: Euclid Ye <[email protected]>
Co-authored-by: Euclid Ye <[email protected]>

Author: servo-wpt-sync

tests/wpt/meta/MANIFEST.json

@@ -79,3 +79,6 @@
 
   [Relative selectors set with selectorText are relative to :scope and &]
     expected: FAIL
+
+  [Ancestor element affecting nested scope root (Through latter selector in list)]
+    expected: FAIL

tests/wpt/meta/css/css-cascade/scope-invalidation.html.ini

@@ -0,0 +1,3 @@
+[display-first-letter-001.html]
+  [display of first-letter]
+    expected: FAIL

tests/wpt/meta/css/css-display/display-first-letter-001.html.ini

@@ -1,3 +1,6 @@
 [display-first-line-001.html]
   [display of first-letter and first-line]
     expected: FAIL
+
+  [display of first-line]
+    expected: FAIL

tests/wpt/meta/css/css-display/display-first-line-001.html.ini

@@ -0,0 +1,2 @@
+[flex-item-content-is-min-width-max-content.html]
+  expected: FAIL

tests/wpt/meta/css/css-flexbox/flex-item-content-is-min-width-max-content.html.ini

@@ -0,0 +1,2 @@
+[flex-gap-decorations-027.html]
+  expected: FAIL

tests/wpt/meta/css/css-gaps/flex/flex-gap-decorations-027.html.ini

@@ -7,3 +7,6 @@
 
   [`column-rule-width` should be as specified regardless of `column-rule-style` with multiple (repeat) values]
     expected: FAIL
+
+  [`column-rule-width` should be independent of column-rule-style, hence should be as specified.]
+    expected: FAIL

tests/wpt/meta/css/css-gaps/parsing/gap-decorations-col-rule-width.html.ini

@@ -34,3 +34,39 @@
 
   [Property grid-template-rows value '[a\] 1em repeat(auto-fit, max-content [b\] auto) 4em [d\]' computes to '[a\] 1px 0px [b\] 0px 4px [d\]']
     expected: FAIL
+
+  [Property grid-template-rows value '1px repeat(auto-fill, auto) 3px' computes to '10px 1px 0px 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '1px repeat(auto-fit, auto) 3px' computes to '10px 1px 0px 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '1px [a\] repeat(auto-fill, min-content max-content) [b\] 4px' computes to '10px 1px [a\] 0px 0px [b\] 4px']
+    expected: FAIL
+
+  [Property grid-template-rows value '1px [a\] repeat(auto-fit, min-content max-content) [b\] 4px' computes to '10px 1px [a\] 0px 0px [b\] 4px']
+    expected: FAIL
+
+  [Property grid-template-rows value '1px [a\] repeat(auto-fill, [b\] fit-content(200px) [c\]) [d\] 3px' computes to '10px 1px [a b\] 0px [c d\] 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '1px [a\] repeat(auto-fit, [b\] fit-content(200px) [c\]) [d\] 3px' computes to '10px 1px [a b\] 0px [c d\] 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '[a\] 1px repeat(auto-fill, auto [b\] auto) 4px [d\]' computes to '10px [a\] 1px 0px [b\] 0px 4px [d\]']
+    expected: FAIL
+
+  [Property grid-template-rows value '[a\] 1px repeat(auto-fit, auto [b\] auto) 4px [d\]' computes to '10px [a\] 1px 0px [b\] 0px 4px [d\]']
+    expected: FAIL
+
+  [Property grid-template-rows value '100% [a\] repeat(auto-fill, [b\] min-content [c\]) [d\] 300%' computes to '10px 1px [a b\] 0px [c d\] 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '100% [a\] repeat(auto-fit, [b\] min-content [c\]) [d\] 300%' computes to '10px 1px [a b\] 0px [c d\] 3px']
+    expected: FAIL
+
+  [Property grid-template-rows value '[a\] 1em repeat(auto-fill, max-content [b\] auto) 4em [d\]' computes to '10px [a\] 1px 0px [b\] 0px 4px [d\]']
+    expected: FAIL
+
+  [Property grid-template-rows value '[a\] 1em repeat(auto-fit, max-content [b\] auto) 4em [d\]' computes to '10px [a\] 1px 0px [b\] 0px 4px [d\]']
+    expected: FAIL

tests/wpt/meta/css/css-grid/parsing/grid-template-rows-intrinsic-auto-repeat-computed-implicit-track.tentative.html.ini

@@ -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

tests/wpt/meta/css/css-mixins/parameters.html.ini

@@ -0,0 +1,2 @@
+[block-ellipsis-003.html]
+  expected: FAIL