fix(inkscape): disable batch_process by default for headless CI

[ronaldtse]

Summary

• Changed batch_process flag default from true to false in Inkscape 1.0.yaml
• Updated the description to accurately reflect that this flag forces GUI to show

Background

According to Inkscape command-line documentation:

--batch-process: Close GUI when done. Only use this when you actually need a GUI. Otherwise you usually don't need (or want) this option, as it forces the GUI to show.

The previous configuration had default: true with description "(required for headless)", which is incorrect. This flag was causing Windows CI failures in vectory because:

1. The --batch-process flag forces the GUI to show
2. Windows CI runs in a headless environment (no display)
3. Inkscape would return exit code 0 but fail to create output files

Test Plan

• After this PR is merged, trigger Windows CI in vectory
• Verify that Inkscape export commands work correctly without --batch-process
• Confirm all 28 previously failing tests now pass