Preserve non-ASCII characters when downloading a zip

[Xpirix]

• The current PR is for the issue Symbol package files have no .zip extension #338

Changes summary

• Preserve non-ASCII characters by using escape_uri_path

[codecov-commenter]

Codecov Report

Attention: 15 lines in your changes are missing coverage. Please review.

Comparison is base (a9dabb5) 36.97% compared to head (f75ffd7) 36.91%.

Files	Patch %	Lines
qgis-app/styles/tests/test_views.py	18.75%	13 Missing ⚠️
qgis-app/base/views/processing_view.py	33.33%	2 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #342      +/-   ##
==========================================
- Coverage   36.97%   36.91%   -0.06%     
==========================================
  Files         106      106              
  Lines        4500     4518      +18     
==========================================
+ Hits         1664     1668       +4     
- Misses       2836     2850      +14     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.