Firefox 143 supports Set-Cookie Http prefixes (#27930)

* Set-Cookie __Host-Http- from HostHttp

* Update http/headers/Set-Cookie.json

---------

Co-authored-by: Claas Augner <[email protected]>

Author: hamishwillee

http/headers/Set-Cookie.json

@@ -556,9 +556,17 @@
               },
               "chrome_android": "mirror",
               "edge": "mirror",
-              "firefox": {
-                "version_added": false
-              },
+              "firefox": [
+                {
+                  "version_added": "143"
+                },
+                {
+                  "version_added": "142",
+                  "version_removed": "143",
+                  "partial_implementation": true,
+                  "notes": "`__Host-Http-` is supported under its original name `__HostHttp-`. See [bug 1982555](https://bugzil.la/1982555)."
+                }
+              ],
               "firefox_android": "mirror",
               "oculus": "mirror",
               "opera": "mirror",
@@ -572,7 +580,7 @@
               "webview_ios": "mirror"
             },
             "status": {
-              "experimental": true,
+              "experimental": false,
               "standard_track": true,
               "deprecated": false
             }