a11y: Set textarea name parameter also as aria-label master
Summary: Form elements should have associated labels per https://www.w3.org/WAI/tutorials/forms/labels/ Setting the `name` parameter for a `<textarea>` also as its `aria-label` is clearly more accessible than exposing no hints at all. Ref T16072 Test Plan: Go to http://phorge.localhost/D1, inspect comment field (below "Add Action..." dropdown) markup, see additional `aria-label="comment"` for `<textarea>` Go to http://phorge.localhost/T1, inspect comment field (below "Add Action..." dropdown) markup, see additional `aria-label="comment"` for `<textarea>` Go to http://phorge.localhost/maniphest/task/edit/1/, inspect Description field markup, see additional `aria-label="description"` for `<textarea>` Go to http://phorge.localhost/paste/edit/1/, inspect Text field markup, see additional `aria-label="text"` for `<textarea>` Optionally, run an Accessibility check in Chromium Lighthouse. Reviewers: O1 Blessed Committers, chris Reviewed By: O1 Blessed Committers, chris Subscribers: tobiaswiese, valerio.bozzolan, Matthew, Cigaryno Maniphest Tasks: T16072 Differential Revision: https://we.phorge.it/D26045