Odoo Release Updates

[ADD] (website_)sale_renting: add tests

[FIX] hr_holidays: Adjust alert styling for leave

[IMP] spreadsheet: change Odoo chart display name

[IMP] web: remove unused legacy mock service for color_scheme

[IMP] social_instagram: add tests for the statistics computation

[IMP] *: Italian tax report UX and UI rework

[FIX] website: fix template sidebar (mobile menu position)

[FIX] hr_payroll: fix multiple bank account traceback in payment report

[FIX] website_slides: change default `o_cc` for `record_cover`

[FIX] mass_mailing: update html_builder asset inclusion

[FIX] html_editor, html_builder: table classes when pasting tables

[FIX] website_sale_(wishlist,comparison): fix installs

[FIX] website: fix `Max # of files` option in file upload fields

[FIX] sign: signing order changes back automatically

[REF] mail: move channel related code to discuss folder

[REM] hr_hourly_cost: merge module in hr

[REM] hr_hourly_cost: merge module in hr

[FIX] project: hide 'Recurrent' field for archived tasks in project sharing view

[FIX] website*: Add "Popup" label to Newsletter Benefits

[FIX] mrp: prevent traceback in MO allocation report

[FIX] sign_emsigner: adjust page coordinates and wizard download button

[IMP] website: remove invalid props from BrokenLinks

[FIX] l10n_hu_edi: Missing 'SZJ' product code

[CLN] sale_subscription: Clean optional products tests' method

[FIX] sale: fix PDF report for combo products

[FIX] html_editor: cleanup hotkeys shortcuts event listeners

[IMP] mass_mailing: improve onboarding in an empty email

[IMP] ai_documents: improve the actions usage and fix some issues

[FIX] html_builder, mass_mailing: add defaultImageMimetype config

[IMP] website_slides: improve responsiveness