Odoo Release Updates

[IMP] mail, web: native-like "back" navigation on mobile browser

[FIX] mail: correctly subtract channel needaction counter from global

[FIX] mail: allow starring persistent messages without thread

[REF] mail,im_livechat: use discuss.channel model instead of mail.thread

[IMP] im_livechat, mail: display country flag and language in discuss sidebar

[IMP] mail: clean discuss category UX/UI

[FIX] mail: proper ratio of avatar in follower list menu

[REF] mail: channel mention use discuss.channel

[FIX] mail_activity_schedule: correct plan_id assignment when having multiple schedulers

[FIX] {,test_}mail: avoid marking unrelated notifications as bounced

[REF] mail: use channel for discuss thread_action

[IMP] mail: server actions: add activity plans

[FIX] mail: restrict discuss settings to administrators

[FIX] mail: enable other views when opening records

[FIX] mail: no access error on starring message without write access

[FIX] mail: proper `group_public_id` for public channel

[IMP] mail: deduplicate notification emails

[IMP] mail: align unread indicators with notification settings

[FIX] mail: fix discuss typing test fails 'Demo is typing...' Found 0

[FIX] base,mail: clear discuss thread cache on partner merge

[REF] mail,im_livechat: move autoOpenChatWindowOnNewMessage to channel

[FIX] portal: link preview triggering page view

[FIX] mail: assigning category to channel fails

[FIX] mail: fix current user not being owner of created channel

[FIX] mail: guard local time formatting against 'localtime' timezone

[FIX] mail: prevent hiding channel during an active call

[REF] mail, *: clean deprecate code (ResPartner.displayName)

[REF] mail: avoid duplicated group ids when updating user groups

[IMP] mail: Use partner-id for messages card popover.

[IMP] mail: streamline meeting chat actions and enhance in-call messaging