V16: Removes RTE Stylesheets (client-side)

[leekelleher]

Description

Following on from the TinyMCE removal (client-side) #18889, the RTE Stylesheet feature has become redundant, and has been removed from the client-side codebase.

Note

Since the create New Rich Text Editor Stylesheet option has been removed from the Stylesheet create modal, we will need to implement an entityCreateOptionAction-powered menu for Stylesheets, so that a 3rd-party TinyMCE package can re-introduce this feature.

[Copilot]

Pull Request Overview

This pull request removes all client-side references to the redundant RTE (Rich Text Editor) Stylesheet feature. Key changes include:

• Complete removal of manifests, constants, and module exports related to the RTE Stylesheet.
• Updates to the stylesheet creation options modal to replace RTE-specific actions with a generic stylesheet creation flow.
• Removal of all RTE Stylesheet language keys from localization files.

Reviewed Changes

Copilot reviewed 32 out of 32 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/global-components/stylesheet-rule-input/manifests.ts	Removed RTE-related modal manifest registration.
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/global-components/stylesheet-rule-input/constants.ts	Removed constants for RTE stylesheet settings.
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/global-components/manifests.ts	Removed import and export of RTE stylesheet manifests.
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/global-components/index.ts	Removed imports and exports for obsolete stylesheet rule components.
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/global-components/constants.ts	Updated exports to no longer include RTE stylesheet constants.
src/Umbraco.Web.UI.Client/src/packages/templating/stylesheets/entity-actions/create/options-modal/stylesheet-create-options-modal.element.ts	Updated modal options to remove the RTE-specific creation link and utilize localized strings.
src/Umbraco.Web.UI.Client/src/mocks/data/stylesheet/stylesheet.data.ts	Removed mock stylesheet rules that referenced RTE styles.
Various localization files (tr-tr.ts, nl-nl.ts, it-it.ts, hr-hr.ts, fr-fr.ts, en.ts, en-us.ts, de-de.ts, da-dk.ts, cy-gb.ts, cs-cz.ts, bs.ts, ar.ts)	Removed keys related to the RTE Stylesheet to reflect the updated functionality.