Windows: Fix direct_write crash when clicking an empty line (#11117)

Windows platform direct_write using `LineLayout::default` indicates
`font_size` will be 0. Zed crashed when click empty line.

Release Notes:
- N/A
c8a496ec4bCharlesChen0823 committed on 4/29/2024, 4:37:45 AM· committed by GitHubparentc826ad2
1 file changedLine totals unavailable