fix: display months in year view in horizontal mode in a scrollview

[rros]

Type of change(s)

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

What changed and why

I changed the layout of the fragment_year layout to have a scrollview for the months. Because the SmallMonthView doesn't have a size of itself, I added an onMeasure method to calculate the desired size of the view. This combined with choosing a good combination of wrap_content and match_parent fixes the layout of this view in horizontal mode.
Some additional considerations:

• I checked this on a phone. Tablets might be more square in dimensions, so a different grid might be better. Then we might need to calculate the number of rows and columns based on dimensions: 2x6, 3x4, 4x3 or 6x2 for instance.
• When the pull-to-refresh function is enabled, it interferes with the scrollview. To fix this, we need to change the implementation from a ScrollView to RecyclerView with a GridLayoutManager.

Tests performed

• Tested on an emulator

Before & after preview

Before:

After:
Screen_recording_20260214_233544.webm

Closes the following issue(s)

• Closes Year view not all days in month are shown #376

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.