Odoo Release Updates

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

[FIX] mail, mass_mailing, *: implement urgent updateValue failsafe

[FIX] html_editor, mass_mailing: various html_field related fixes

[FIX] mass_mailing: simulate controlled onBlur record update

[FIX] mass_mailing: halve custom snippet title size

[REF] *: remove url from js file tours

[FIX] mass_mailing: update Img option component to Image

[CLN] html_builder, *: rename plugin resources

[FIX] mass_mailing: hide content of folded group of options

[FIX] html_editor, mass_mailing: properly name normalize resources

[REF] html_editor, *: refactor resource functions

[IMP] mail: update tracking API

[REF] html_editor, *: rename predicates in the form of questions

[FIX] html_builder, mass_mailing: quick UX fixes followup

[IMP] mass_mailing: add new snippets

[FIX] mass_mailing: preserve changes when switching form tabs

[IMP] mass_mailing: mailing preview modal design fixup

[REF] html_editor, *: rename some misleadingly named resources

[IMP] mail,*: MailThreadCC removal, default subject and tweaks

[IMP] utm: improve and generalize UTM trackers data

[IMP] mass_mailing, *: add auto-fill snippet plugin

[IMP] mass_mailing: Simplifying merge action

[REF] html_editor, *: turn normalize_handlers into processors

[REF] html_editor, *: turn clean_for_save_handlers into processors

[REF] html_editor, *: turn a few more handlers into processors

[IMP] mail: cleanup track naming and usage

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

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

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

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