[e2e][couchdb] Add test coverage for mct5616 (#5913)

* [e2e][couchdb] Add test for mct5616

- Add test to verify that modifying object properties generates a single persistence operation with CouchDB

* [e2e] Poll for 1 sec to allow time for request

* [e2e] ignore expected console error

* add comments

* add `aria-label`s to form select fields

* add `aria-label` for clock format select

* [e2e] Improve selector

* make property name less ambiguous

* refactor(e2e): use default object name

src/api/forms/components/controls/SelectField.vue

@@ -26,6 +26,7 @@
         v-model="selected"
         required="model.required"
         name="mctControl"
+        :aria-label="model.ariaLabel || model.name"
         @change="onChange($event)"
     >
         <option