Pin <fencedframe> support to the element itself (#3246)

Author: foolip

features/fencedframe.yml

@@ -1,6 +1,8 @@
 name: <fencedframe>
 description: The `<fencedframe>` element embeds another HTML page into the current page in a more secure and privacy-preserving way than `<iframe>` elements.
 spec: https://wicg.github.io/fenced-frame/
+status:
+  compute_from: html.elements.fencedframe
 compat_features:
   - api.Fence
   - api.Fence.getNestedConfigs

features/fencedframe.yml.dist

@@ -4,10 +4,11 @@
 status:
   baseline: false
   support:
-    chrome: "128"
-    chrome_android: "128"
-    edge: "128"
+    chrome: "126"
+    chrome_android: "126"
+    edge: "126"
 compat_features:
+  # ⬇️ Same status as overall feature ⬇️
   # baseline: false
   # support:
   #   chrome: "126"
@@ -35,7 +36,6 @@ compat_features:
   - http.headers.Content-Security-Policy.fenced-frame-src
   - http.headers.Sec-Fetch-Dest.fencedframe
 
-  # ⬇️ Same status as overall feature ⬇️
   # baseline: false
   # support:
   #   chrome: "128"