Merge nonce hiding subfeature into nonce (#29045)

* Merge nonce hiding subfeature into nonce

* add partials

* User stronger wording as proposed by Daniel

Co-authored-by: Daniel D. Beck <daniel@ddbeck.com>

---------

Co-authored-by: Daniel D. Beck <daniel@ddbeck.com>
Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com>

Author: 3 people

html/global_attributes.json

@@ -885,16 +885,32 @@
             },
             "chrome_android": "mirror",
             "edge": "mirror",
-            "firefox": {
-              "version_added": "31"
-            },
+            "firefox": [
+              {
+                "version_added": "75"
+              },
+              {
+                "version_added": "31",
+                "version_removed": "75",
+                "partial_implementation": true,
+                "notes": "Firefox does not prevent `nonce` exfiltration through content attributes."
+              }
+            ],
             "firefox_android": "mirror",
             "oculus": "mirror",
             "opera": "mirror",
             "opera_android": "mirror",
-            "safari": {
-              "version_added": "15.4"
-            },
+            "safari": [
+              {
+                "version_added": "15.5"
+              },
+              {
+                "version_added": "15.4",
+                "version_removed": "15.5",
+                "partial_implementation": true,
+                "notes": "Safari does not prevent `nonce` exfiltration through content attributes."
+              }
+            ],
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
             "webview_android": "mirror",
@@ -905,41 +921,6 @@
             "standard_track": true,
             "deprecated": false
           }
-        },
-        "nonce_hiding": {
-          "__compat": {
-            "description": "`nonce` hiding behavior",
-            "spec_url": "https://html.spec.whatwg.org/multipage/urls-and-fetching.html#nonce-does-not-update-dom",
-            "tags": [
-              "web-features:csp"
-            ],
-            "support": {
-              "chrome": {
-                "version_added": "61"
-              },
-              "chrome_android": "mirror",
-              "edge": "mirror",
-              "firefox": {
-                "version_added": "75"
-              },
-              "firefox_android": "mirror",
-              "oculus": "mirror",
-              "opera": "mirror",
-              "opera_android": "mirror",
-              "safari": {
-                "version_added": "15.5"
-              },
-              "safari_ios": "mirror",
-              "samsunginternet_android": "mirror",
-              "webview_android": "mirror",
-              "webview_ios": "mirror"
-            },
-            "status": {
-              "experimental": false,
-              "standard_track": true,
-              "deprecated": false
-            }
-          }
         }
       },
       "part": {