WIP: Fix loading comment replies

[CL-Jeremy]

Pull Request Type

• Bugfix
• Feature Implementation
• Documentation
• Other

Related issue

closes #9474.

Description

This PR fixes makes use of the recent feature update of upstream YouTube.js Edge version to quickly fix fetching replies. Since upstream will most probably publish a release (v18?) soon-ish, I'm putting this here as a starter (based on the discussion at LuanRT/YouTube.js#1214, see additional context below). Upstream has nested replies ready so that could be implemented later (design choices have to be made).

Screenshots

Testing

Open any video with comments and try to load them. Replies should also work.

Desktop

• OS: macOS
• OS Version: 15.7.8
• FreeTube version: 0.25.1 Beta

Additional context

• pnpm-related changes are obviously provisional and will be changed as soon as the next YouTube.js release lands.
• While loading comments now requires a full session (in order to get sub-threads) just like getting video info, the session is bound to the initial comment request, so continuations should still be fast. Note the session is reused between continuations of the same comment thread request, i. e. one per video page refresh. Question is whether that should be of concern.