vim: Fix d shift-g not deleting until EOD if soft-wrap is on (#20160)

This previously didn't work: `d G` would delete to the end of the "first
of the soft-wrapped lines" of the last line.

To fix it, we special case the delete behavior for `shift-g`, which is
what Neovim also seems to do.


Release Notes:

- Fixed `d G` in Vim mode not deleting until the actual end of the
document if soft-wrap is turned on.

crates/vim/test_data/test_wrapped_delete_end_document.json

@@ -0,0 +1,10 @@
+{"SetOption":{"value":"wrap"}}
+{"SetOption":{"value":"columns=12"}}
+{"Put":{"state":"aaˇaaaaaaaaaaaaaaaaaa\nbbbbbbbbbbbbbbbbbbbb\ncccccccccccccccccccc"}}
+{"Key":"d"}
+{"Key":"shift-g"}
+{"Key":"i"}
+{"Key":"z"}
+{"Key":"z"}
+{"Key":"z"}
+{"Get":{"state":"zzzˇ","mode":"Insert"}}