fix: omit a11y warning on `<video>` when `aria-hidden="true"` (#7880)

Related to #5967. Closes #7874

---------

Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
Co-authored-by: Yuichiro Yamashita <xydybaseball@gmail.com>

src/compiler/compile/nodes/Element.ts

@@ -718,7 +718,10 @@ export default class Element extends Node {
 		}
 
 		if (this.name === 'video') {
-			if (attribute_map.has('muted')) {
+			const aria_hidden_attribute = attribute_map.get('aria-hidden');
+			const aria_hidden_exist = aria_hidden_attribute && aria_hidden_attribute.get_static_value();
+
+			if (attribute_map.has('muted') || aria_hidden_exist === 'true') {
 				return;
 			}
 

test/validator/samples/a11y-media-has-caption/input.svelte

@@ -2,3 +2,6 @@
 <video></video>
 <video><track /></video>
 <audio></audio>
+<video aria-hidden></video>
+<video aria-hidden="false"></video>
+<video aria-hidden="true"></video>

test/validator/samples/a11y-media-has-caption/warnings.json

@@ -28,5 +28,35 @@
       "column": 0,
       "line": 3
     }
+  },
+  {
+    "code": "a11y-media-has-caption",
+    "end": {
+      "character": 124,
+      "column": 27,
+      "line": 5
+    },
+    "message": "A11y: <video> elements must have a <track kind=\"captions\">",
+    "pos": 97,
+    "start": {
+      "character": 97,
+      "column": 0,
+      "line": 5
+    }
+  },
+  {
+    "code": "a11y-media-has-caption",
+    "end": {
+      "character": 160,
+      "column": 35,
+      "line": 6
+    },
+    "message": "A11y: <video> elements must have a <track kind=\"captions\">",
+    "pos": 125,
+    "start": {
+      "character": 125,
+      "column": 0,
+      "line": 6
+    }
   }
 ]