Sync WPT with upstream (14-09-2025) (#39293)

Automated downstream sync of changes from upstream as of 14-09-2025
[no-wpt-sync]

Signed-off-by: WPT Sync Bot <ghbot+wpt-sync@servo.org>

tests/wpt/meta/dom/ranges/tentative/FormControlRange-basic.html.ini

@@ -4,3 +4,6 @@
 
   [Tests FormControlRange default values when no form control is set.]
     expected: FAIL
+
+  [FormControlRange handles empty value correctly.]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-offset.html.ini

@@ -0,0 +1,33 @@
+[FormControlRange-offset.html]
+  [FormControlRange with single character in textarea.]
+    expected: FAIL
+
+  [FormControlRange with empty control in textarea.]
+    expected: FAIL
+
+  [FormControlRange boundary positions in textarea.]
+    expected: FAIL
+
+  [FormControlRange with Unicode characters in textarea.]
+    expected: FAIL
+
+  [FormControlRange with single character in input.]
+    expected: FAIL
+
+  [FormControlRange with empty control in input.]
+    expected: FAIL
+
+  [FormControlRange boundary positions in input.]
+    expected: FAIL
+
+  [FormControlRange with Unicode characters in input.]
+    expected: FAIL
+
+  [FormControlRange preserves whitespace in textarea light DOM.]
+    expected: FAIL
+
+  [FormControlRange should work correctly with weirdly formed light DOM structure.]
+    expected: FAIL
+
+  [FormControlRange ignores malformed input child nodes.]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-range-updates.html.ini

@@ -0,0 +1,15 @@
+[FormControlRange-range-updates.html]
+  [FormControlRange allows updating range on same element.]
+    expected: FAIL
+
+  [FormControlRange can switch between different form controls.]
+    expected: FAIL
+
+  [FormControlRange works with disconnected and then connected form controls.]
+    expected: FAIL
+
+  [FormControlRange can switch between connected and disconnected form controls.]
+    expected: FAIL
+
+  [FormControlRange reflects value changes on same element.]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-supported-elements.html.ini

@@ -0,0 +1,18 @@
+[FormControlRange-supported-elements.html]
+  [FormControlRange should support textarea.]
+    expected: FAIL
+
+  [FormControlRange should support input[type=text\].]
+    expected: FAIL
+
+  [FormControlRange should support input[type=search\].]
+    expected: FAIL
+
+  [FormControlRange should support input[type=password\].]
+    expected: FAIL
+
+  [FormControlRange should support input[type=url\].]
+    expected: FAIL
+
+  [FormControlRange should support input[type=tel\].]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-toString.html.ini

@@ -0,0 +1,15 @@
+[FormControlRange-toString.html]
+  [FormControlRange toString() reflects current value.]
+    expected: FAIL
+
+  [FormControlRange toString() clamps to available length.]
+    expected: FAIL
+
+  [FormControlRange toString() handles value shorter than range.]
+    expected: FAIL
+
+  [FormControlRange toString() handles auto-collapsed backwards ranges.]
+    expected: FAIL
+
+  [FormControlRange uses current input.value, not value attribute.]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-unsupported-elements.html.ini

@@ -0,0 +1,12 @@
+[FormControlRange-unsupported-elements.html]
+  [FormControlRange throws NotSupportedError for text node.]
+    expected: FAIL
+
+  [FormControlRange should throw NotSupportedError for all unsupported HTML5 elements.]
+    expected: FAIL
+
+  [FormControlRange should throw NotSupportedError for unsupported input types.]
+    expected: FAIL
+
+  [NotSupportedError should take precedence over IndexSizeError when both element type and index are invalid for a FormControlRange.]
+    expected: FAIL

tests/wpt/meta/dom/ranges/tentative/FormControlRange-validation.html.ini

@@ -0,0 +1,6 @@
+[FormControlRange-validation.html]
+  [FormControlRange preserves state when setFormControlRange throws.]
+    expected: FAIL
+
+  [FormControlRange handles all range types correctly: forward, backwards, and out-of-bounds.]
+    expected: FAIL