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/htmlscriptelement.rs

@@ -1188,15 +1188,15 @@ impl VirtualMethods for HTMLScriptElement {
         Some(self.upcast::<HTMLElement>() as &dyn VirtualMethods)
     }
 
-    #[expect(unsafe_code)]
-    fn attribute_mutated(&self, attr: &Attr, mutation: AttributeMutation, can_gc: CanGc) {
-        // TODO: https://github.com/servo/servo/issues/42812
-        let mut cx = unsafe { script_bindings::script_runtime::temp_cx() };
-        let cx = &mut cx;
-
+    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);
         if *attr.local_name() == local_name!("src") {
             if let AttributeMutation::Set(..) = mutation {
                 if !self.parser_inserted.get() && self.upcast::<Node>().is_connected() {