chore(nextcloud)!: Remove deprecated userAgent and cookieJar parameters from NextcloudClient

[provokateurin]

Closes #2417

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 29.87%. Comparing base (5915c57) to head (4ce78c1).
Report is 7 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2447      +/-   ##
==========================================
+ Coverage   27.20%   29.87%   +2.66%     
==========================================
  Files         369      332      -37     
  Lines      136676   124330   -12346     
==========================================
- Hits        37189    37138      -51     
+ Misses      99487    87192   -12295     

Flag	Coverage Δ		*Carryforward flag
account_repository	99.64% <ø> (ø)
cookie_store	100.00% <ø> (ø)		Carriedforward from 5915c57
dashboard_app	96.05% <ø> (ø)
dynamite	31.08% <ø> (ø)		Carriedforward from 5915c57
dynamite_end_to_end_test	61.69% <ø> (ø)		Carriedforward from 5915c57
dynamite_runtime	85.40% <ø> (ø)		Carriedforward from 5915c57
neon_dashboard	96.05% <ø> (ø)		Carriedforward from 5915c57
neon_framework	43.55% <ø> (ø)
neon_http_client	93.28% <ø> (ø)
neon_notifications	100.00% <ø> (ø)		Carriedforward from 5915c57
neon_talk	99.45% <ø> (ø)		Carriedforward from 5915c57
nextcloud	25.88% <ø> (+2.61%)	⬆️
notifications_app	100.00% <ø> (ø)
sort_box	90.90% <ø> (ø)		Carriedforward from 5915c57
talk_app	99.09% <ø> (ø)

*This pull request uses carry forward flags. Click here to find out more.

Files with missing lines	Coverage Δ
packages/nextcloud/lib/src/nextcloud_client.dart	100.00% <ø> (ø)

... and 37 files with indirect coverage changes

[Leptopoda]

Please drop the cookie_jar dependency

[Leptopoda]

Finally 🎉