Update react-theme token pipeline

[miroslavstastny]

After the latest tokens update before the final release (#23608) the theme files do not match what is generated by the token pipeline.

There are multiple items which we need to work on:

• update the token pipeline to produce the current theme shape chore(react-theme): refactor global shared colors #24435
• there are token updates (Update and add token values to improve accessibility #24027) -> update the SSOT JSONs
• contributors do not know that theme must be updated using token pipeline (Update and add token values to improve accessibility #24027) -> create/update token pipeline docs docs(react-theme): Update readme #24755
• contributors do not have access rights to the SSOT repo -> fix the rights
• add a CI tooling which will prevent the theme files from being updated manually
• react-theme-sass tests did not catch missing SASS token in Update and add token values to improve accessibility #24027 -> react-theme-sass dev-depends on react-theme #24343

[miroslavstastny]

Most of the items have been fixed. Leaving the CI tooling for a separate work item.