fix: removed padding on monthly widget

[Sergueille]

Type of change(s)

• Bug fix
• Feature / enhancement
• Infrastructure / tooling (CI, build, deps, tests)
• Documentation

What changed and why

• Removed padding around the monthly calendar widget. According to Scaling bug in app widgets #63, the monthly calendar was too small compared to the other widgets.

Tests performed

• Tested on emulators with android 16 and android 9, both with multiple font sizes

Before & after preview

Before:

After:

Closes the following issue(s)

• Closes Scaling bug in app widgets #63

Checklist

• I read the contribution guidelines.
• I manually tested my changes on device/emulator (if applicable).
• I updated the "Unreleased" section in CHANGELOG.md (if applicable).
• I have self-reviewed my pull request (no typos, formatting errors, etc.).
• I understand every change in this pull request.