I propose we remove the callout contribution menu from old vector theme entrypoint. This entry point is a hover menu(callout) on contributions.

(You can try this by visiting an article with old vector skin - example: https://en.wikipedia.org/wiki/James_Webb_Space_Telescope?useskin=vector)
There is also a feature discovery feature(blue pulse) when user did not activate CX yet.

An added complexity also exist. When a user is shown this feature discover pulse, the menu does not appear. The menu hover does not work,but when you click on contributions link, a dialog is shown as given in screenshot.

Then in that page, if I click on VE edit, the dialog should disappear and the menu with 3 contribution options should appear.

I visited this part of code while attempting to use new VE hook system(T390074). But I strongly prefer removing all of these features from vector(old) skin.
We support inline Translation menu in Vector-2022 skin and I think that is sufficient.

There is no benefit from keeping this jquery based custom menu and dialogs that does not match with Codex or design system.