feat: Switch package management from pipenv to uv #504

Job	Run time
android_test (test/functional/android/appium_service_tests.py test/functional/android/chrome_test...	3m 15s
ios_test (test/functional/ios/safari_tests.py, func_test_ios1)	8m 42s
flutter_e2e_test (ubuntu-latest, flutter-android)	5m 3s
flutter_e2e_test (macos-14, flutter-ios)	8m 47s
	25m 47s

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