First of all, it's easier to maintain the corresponding extensions this way as
the language evolves.
Also, it will help to extract remaining language-specific logic from Grazie to
other language plugins, as existing direction of optional dependencies (Grazie -> Python)
prevented doing the same for JavaScript because of an introduced plugin dependency
(JavaScript -> Grazie -> Python -> JavaScriptDebugger).
GitOrigin-RevId: a1e5a3d8121daf4f949abd0a602eb79c8a6f6dd9