v66.2.0

Full changelog

• General
  • Stop reporting db file sizes during init phase (#3331)
  • Tiny performance improvement for putting tasks on the dispatcher (#3318)
  • Instrument the case when the client_id.txt file does not exist yet (#3339)
  • When a missing client ID in the database is detected, Glean now restores the backup client ID (#3334)
  • Disable the post_init health ping (#3343)
• iOS
  • Glean for iOS is now being built with Xcode 26.2 (#3350)
  • Fix strict concurrency warnings uncovered in Swift 6 (#3325, #3347)
  • Correctly end background tasks (#3347)
• Android
  • Configuration-time performance optimizations for the Glean Gradle Plugin (#3326)
• Python
  • Bindings are generated in library mode, enabling source install from PyPI (#3317)