fix(gui): keep Settings Language description on one line

[davidbudnick]

Fixes #61.

In Settings → Language, the "Choose the interface language." description rendered one character per line (see the issue screenshot). The language Select's root element is size_full, so it claimed the entire row and starved the description column to near-zero width, forcing the text to wrap per-character.

Fix

• Wrap the language Select in a fixed-size, non-shrinking box (flex_shrink_0().w(220px).h_6()) so it no longer expands to fill the row.
• Let the settings scroll container flex and scroll (flex_1().min_h(0)) and grow the window height (360 → 460) so the Language section isn't clipped.

Cherry-picked from #24 — the Settings/Language spacing fix only, none of the locale-expansion or asset changes.

cargo check -p openlogi-gui green.

[pullfrog]

✅ No new issues found.

Reviewed changes — PR #72 fixes per-character wrapping of the "Choose the interface language." description in Settings → Language by pinning the Select's size_full root to a fixed flex_shrink_0 box so it no longer starves the description column.

• Wrap language Select in fixed-size box — div().flex_shrink_0().w(px(220.)).h_6() prevents the size_full root from claiming the entire row and forcing the description into per-character wrapping.
• Make scroll container flex+scroll — .flex_1().min_h(px(0.)) on the inner v_flex enables proper vertical fill and scrolling.
• Grow window height — 360 → 460 so the Language section isn't clipped.

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