yG incorrectly truncates yanked text when last line wraps in vim mode

[koskeller]

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• Completed

Describe the bug / provide steps to reproduce it

When yanking to end of file (yG) on a wrapped line in vim mode, the operation truncates content after the first visual line break instead of copying the entire logical line.

Steps:

1. Open file with wrapped content
2. Position cursor at start
3. Press yG

Expected (as in vim/nvim): Yanks entire file content including wrapped portions
Actual: Yanks only until first visual line break

Sample file content showing the issue:

Zed is already much closer to Vim. We have extensive "side-by-side" testing where we run headless Neovim to ensure our keyboard shortcuts do exactly the same thing. That said, there's always more to do, both to add the remaining minor motions zL/zH come to mind, and fix edge cases in things like d]}.

yG output:

Zed is already much closer to Vim. We have extensive "side-by-side" testing where we 

Zed Version and System Specs

Zed: v0.170.2 (Zed)
OS: macOS 14.6.1
Memory: 72 GiB
Architecture: x86_64

If applicable, add screenshots or screencasts of the incorrect state / behavior

If applicable, attach your Zed.log file to this issue.

Zed.log