Remove beta badge for remote development

What does this MR do and why?

Issue:

• UI: Remove beta tag from workspace (#436996 - closed)
• Docs: Remove beta tag from workspace (#436997 - closed)

As we prepare for Remote Development GA release, remove the Beta badge from the related UI components and documentation pages.

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Context	Before	After
Listing workspaces
Creating a new workspace

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.