script: Pass &mut JSContext to attribute_mutated (#43383)

It pushes the `temp_cx` 1 level up to `element.rs` where the calling
chain begins. Other than that this was purely a mechanical change where
I used regexes to replace all patterns with the new ones.

Part of #42812

Testing: It compiles

Signed-off-by: Tim van der Lippe <tvanderlippe@gmail.com>

components/script/dom/html/htmlfieldsetelement.rs

@@ -158,10 +158,15 @@ impl VirtualMethods for HTMLFieldSetElement {
         Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
     }
 
-    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation, can_gc: CanGc) {
+    fn attribute_mutated(
+        &self,
+        cx: &mut js::context::JSContext,
+        attr: &Attr,
+        mutation: AttributeMutation,
+    ) {
         self.super_type()
             .unwrap()
-            .attribute_mutated(attr, mutation, can_gc);
+            .attribute_mutated(cx, attr, mutation);
         match *attr.local_name() {
             local_name!("disabled") => {
                 let disabled_state = match mutation {
@@ -247,7 +252,7 @@ impl VirtualMethods for HTMLFieldSetElement {
                 }
             },
             local_name!("form") => {
-                self.form_attribute_mutated(mutation, can_gc);
+                self.form_attribute_mutated(mutation, CanGc::from_cx(cx));
             },
             _ => {},
         }