Odoo Release Updates

[REF] mail: replace `registerMessageRefs` to `useChildRefs` hooks

[IMP] mail: remove unused prop 'messageActions' from Thread component

[IMP] mail: remove console errors from sound effect HOOT url failing

[REF] mail, *: replaced self_partner by self_user

[FIX] mail: clean the "beforeunload" listener in tests

[IMP] mail: adapt test to use discuss.channel model

[IMP] mail: use link plugin in composer

[IMP] mail: snappy open/fold discuss sidebar category

[FIX] mail: crash on failed file upload full composer

[FIX] mail: Store extra_fields shared list mutation

[REF] mail: simplify props to LinkPreview component

[REF] mail, im_livechat: return user in _get_current_persona

[REF] mail: message.isTranslatable simplified

[REF] mail, *: do not send empty ADD or DELETE for many in Store

[CLN] *: manifests

[FIX] discuss: prevent invalid fields overrides in tests

[FIX] mail: Detect only email when checking for loop

[REF] mail: make user inherit partner (JS)

[FIX] mail: ensure only one expander for fullComposer signature

[REF] core: typing.Self can be used since 3.12

[IMP] mail: don't call old disconnected guests

[FIX] mail: html composer styling issues

[IMP] mail: link attachments to record in mass mail

[FIX] im_livechat: do not send im status of agent to visitor

[IMP] mail: improve activity view

[FIX] mail: handle response on uploading encrypted pdf file

[IMP] mail: add discuss.channel getOrFetch

[FIX] mail: correct discuss header alignment below XL screen size

[FIX] mail: correct "is talking" color in call menu with dark theme

[IMP] mail: user info selector in avatar card