Odoo Release Updates

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

[FIX] mass_mailing: unlink mail.message of test mails

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

[IMP] base_import, *: comprehensive UX cleanup and modernization

[FIX] mass_mailing: handle reviews wall crash

[IMP] mass_mailing: add new snippets

[CLN] *: clean UTM demo data

[FIX] mass_mailing: prevent blockquote content loss

[REF] test_mail, various: cleanup tracking tests

[IMP] various: update mail track tests

[FIX] mass_mailing: fix columns block layout in received emails

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

[IMP] *: remove datas

[FIX] mass_mailing: don't enforce deep font-family

[FIX] *: replace "Deco Addict" with "Acme Corporation"

[IMP] mass_mailing: remove Design Tab --link-font-size

[FIX] website, html_builder, mass_mailing: register snippet models

[FIX] mass_mailing: fix non-deterministic errors

[REF] base, *: centralize and improve partner address formatting

[FIX] mass_mailing: properly await ThemeSelector in tests

[FIX] mass_mailing: optimization for mass_mailing_tests

[FIX] mass_mailing: properly await ThemeSelector in tests

[IMP] html_builder, *: ensure compatibility with RTL

[FIX] mass_mailing: fix assets loading test

[IMP] *: UX Fixes and improvements to mass_mailing builder

[FIX] mass_mailing: prevent crash on iframe removed

[FIX] html_editor,mail,web_editor: fix color css breaking inline style in mails

[FIX] api_doc, test_lint, *: Parse full return docstring

[FIX] mass_mailing: preserve transparency for images with alpha channel

[FIX] mail, mass_mailing: add getOuterHtml and getInnerHtml utils