[PM-28079] Add attributes to filter for the mutationObserver (#17832)

* [PM-28079] Add attributes to filter for the mutationObserver

* Update attributes based on Claude suggestions

* Updated remaining attributes

* Adjust placeholder check in `updateAutofillFieldElementData`

* Update ordering of constants and add comment

* Remove `tagName` and `value` from mutation logic

* Add new autocomplete and aria attributes to `updateActions`

* Fix autocomplete handlers

* Fix broken test for `updateAttributes`

* Order attributes for readability in `updateActions`

* Fix tests

---------

Co-authored-by: Jonathan Prusik <jprusik@users.noreply.github.com>

libs/common/src/autofill/constants/index.ts

@@ -28,6 +28,41 @@ export const EVENTS = {
   SUBMIT: "submit",
 } as const;
 
+/**
+ * HTML attributes observed by the MutationObserver for autofill form/field tracking.
+ * If you need to observe a new attribute, add it here.
+ */
+export const AUTOFILL_ATTRIBUTES = {
+  ACTION: "action",
+  ARIA_DESCRIBEDBY: "aria-describedby",
+  ARIA_DISABLED: "aria-disabled",
+  ARIA_HASPOPUP: "aria-haspopup",
+  ARIA_HIDDEN: "aria-hidden",
+  ARIA_LABEL: "aria-label",
+  ARIA_LABELLEDBY: "aria-labelledby",
+  AUTOCOMPLETE: "autocomplete",
+  AUTOCOMPLETE_TYPE: "autocompletetype",
+  X_AUTOCOMPLETE_TYPE: "x-autocompletetype",
+  CHECKED: "checked",
+  CLASS: "class",
+  DATA_LABEL: "data-label",
+  DATA_STRIPE: "data-stripe",
+  DISABLED: "disabled",
+  ID: "id",
+  MAXLENGTH: "maxlength",
+  METHOD: "method",
+  NAME: "name",
+  PLACEHOLDER: "placeholder",
+  POPOVER: "popover",
+  POPOVERTARGET: "popovertarget",
+  POPOVERTARGETACTION: "popovertargetaction",
+  READONLY: "readonly",
+  REL: "rel",
+  TABINDEX: "tabindex",
+  TITLE: "title",
+  TYPE: "type",
+} as const;
+
 export const ClearClipboardDelay = {
   Never: null as null,
   TenSeconds: 10,