fix(neon_talk): Request file previews in a sensible resoltion if none is provided

[provokateurin]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 30.85%. Comparing base (6c7be4c) to head (b0d4e08).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2280   +/-   ##
=======================================
  Coverage   30.85%   30.85%           
=======================================
  Files         262      262           
  Lines       96596    96598    +2     
=======================================
+ Hits        29802    29804    +2     
  Misses      66794    66794           

Flag	Coverage Δ		*Carryforward flag
cookie_store	90.51% <ø> (ø)		Carriedforward from 6c7be4c
dynamite	31.10% <ø> (ø)		Carriedforward from 6c7be4c
dynamite_end_to_end_test	60.03% <ø> (ø)		Carriedforward from 6c7be4c
dynamite_runtime	85.40% <ø> (ø)		Carriedforward from 6c7be4c
neon_dashboard	96.20% <ø> (ø)		Carriedforward from 6c7be4c
neon_framework	45.78% <ø> (ø)		Carriedforward from 6c7be4c
neon_notifications	100.00% <ø> (ø)		Carriedforward from 6c7be4c
neon_talk	98.94% <100.00%> (+<0.01%)	⬆️
nextcloud	27.67% <ø> (ø)		Carriedforward from 6c7be4c
sort_box	90.90% <ø> (ø)		Carriedforward from 6c7be4c

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

Files	Coverage Δ
...talk/lib/src/widgets/rich_object/file_preview.dart	100.00% <100.00%> (ø)