block grid spell out why there is no permissions UI

[nielslyngsoe]

Today if no Block Types have been created the UI is missing for the Block Area Permissions, this writes a text about why.

[Copilot]

Pull Request Overview

This PR removes obsolete version 1.0 endpoints and refactors API controller methods to use synchronous returns where asynchronous processing is unnecessary, while also updating related configuration and pipeline files.

• Removed deprecated endpoints from several Media and Content API controllers.
• Refactored async methods to return results synchronously.
• Updated Swagger route configuration and build pipelines, and added new Azure workflows for Storybook and Backoffice deployments.

Reviewed Changes

Copilot reviewed 2305 out of 2308 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/Umbraco.Cms.Api.Delivery/Controllers/Media/ByIdsMediaApiController.cs	Removed obsolete v1 endpoint and refactored ItemsV20 method.
src/Umbraco.Cms.Api.Delivery/Controllers/Media/ByIdMediaApiController.cs	Removed obsolete v1 endpoint and updated asynchronous handling.
src/Umbraco.Cms.Api.Delivery/Controllers/Content/QueryContentApiController.cs	Removed obsolete v1 query endpoint.
src/Umbraco.Cms.Api.Delivery/Controllers/Content/ContentApiControllerBase.cs	Replaced obsolete attribute with updated one.
src/Umbraco.Cms.Api.Delivery/Controllers/Content/ByRouteContentApiController.cs	Removed obsolete v1 endpoint and simplified async calls.
src/Umbraco.Cms.Api.Delivery/Controllers/Content/ByIdsContentApiController.cs and ByIdContentApiController.cs	Removed obsolete endpoints.
src/Umbraco.Cms.Api.Common/OpenApi/*	Removed obsolete overloads and updated configuration code.
build/* and .github/workflows/*	Updated and added CI/CD pipeline definitions.
NOTICES.txt	Removed outdated third-party notice for TinyMCE.

Files not reviewed (3)

• .vscode/settings.json: Language not supported
• Directory.Build.props: Language not supported
• Directory.Packages.props: Language not supported

Comments suppressed due to low confidence (2)

src/Umbraco.Cms.Api.Common/OpenApi/SwaggerRouteTemplatePipelineFilter.cs:44

• Confirm that replacing the call to GetUmbracoPath with GetBackOfficePath correctly reflects the intended base URL for Swagger endpoints in all environments.

=> "${GetBackOfficePath(applicationBuilder).TrimStart(Constants.CharArrays.ForwardSlash)}/swagger/{{documentName}}/swagger.json";

src/Umbraco.Cms.Api.Delivery/Controllers/Content/ContentApiControllerBase.cs:16

• Verify that the new attribute [ContextualizeFromAcceptHeaders] fully replaces the behavior previously provided by [LocalizeFromAcceptLanguageHeader] to ensure consistent header-based localization.

[ContextualizeFromAcceptHeaders]