Move pin drop out of labs (PSG-664)

[Johennes]

Requires: https://github.com/matrix-org/matrix-react-sdk/pull/9135

Signed-off-by: Johannes Marbach [email protected]

Notes: Move pin drop out of labs

Checklist

• [x] Tests written for new code (and old code if feasible)
• [x] Linter and other CI checks pass
• [x] Sign-off given on the changes (see CONTRIBUTING.md)

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Here's what your changelog entry will look like:

✨ Features

• Move pin drop out of labs (#22993).