Odoo Release Updates

[REM] appointment: remove `tz` override on `appointment.resource`

[REF] *: stop using `exprToBoolean` for date field options

[REF] appointment: run rendering context migration script

[REF] *: Run script to replace t-ref by t-custom-ref

[FIX] appointment: fix form float time fields length

[IMP] orm: Model concat, union change

[IMP] mail, various: update tracking API

[IMP] website,base,*: replace 'request.env' with 'env' in templates

[FIX] appointment: error when creating resource from form view

[FIX] web: formatFloatTime + use extractOptions in list/graph

[IMP] appointment: improve UX

[IMP] appointment: prevent Share button from covering panel

[IMP] mail, various: cleanup track naming and usage

[IMP] various: set email layout in the mail templates

[REF] *: remap useState import to owl2/utils

[REF] *: remap useRef import to owl2/utils

[REF] *: remap useSubEnv import to owl2/utils

[REF] *: remap useEnv import to owl2/utils

[REF] *: remap useComponent import to owl2/utils

[IMP] appointment: adapt the code to the new default alarm of calendar.event

[FIX] appointment: ensure selected outline visibility

[REF] *: Replace useEffect with useLayoutEffect for owl3 migration

[FIX] appointment: prevent appointment view reordering

[FIX] appointment: fix gantt unavailability test with demo data

[FIX] *: fix test timezone setup

[IMP] appointment: fix quick create form margins

[REF] test_mail, various: cleanup tracking tests

[IMP] appointment{_crm}: allow calendar events to have activities

[IMP] *: rename "Cancel" to "Discard"

[IMP] {pos_}appointment: remove activities from calendar