Chrome does not clean up old extension versions on disk after update

## Issue Details
Chrome keeps old extension versions on disk after an update. They are only removed after a full browser restart. If Chrome stays open for a long time without restarting, old versions accumulate and can take gigabytes of disk space.

## Expected Behavior
Old extension versions should be cleaned up after a successful update, without requiring a browser restart.

## Actual Behavior
Old versions remain on disk until Chrome is restarted.

## Workaround
Restart Chrome.

## Additional Information
Upstream Chromium issues:
https://issues.chromium.org/issues/40715610
https://issues.chromium.org/issues/532893023