Revert "Add a next_mode to vim::Paste instead of hard-coding Normal mode (#27897) (#28162)

This PR reverts #27897, as it is causing a number of Helix-related tests
to fail:

```
     Summary [  84.324s] 1796 tests run: 1793 passed, 3 failed, 0 skipped
        FAIL [   0.434s] vim helix::test::test_delete
        FAIL [   0.562s] vim helix::test::test_delete_character_end_of_buffer
        FAIL [   0.537s] vim helix::test::test_delete_character_end_of_line
```

This reverts commit 9949512b64ab2f472fc3426d853bc9bd0f6d94e2.

Release Notes:

- Community: Reverted https://github.com/zed-industries/zed/pull/27897.
41827372feMarshall Bowers committed on 4/5/2025, 7:52:56 PM· committed by GitHubparent9949512
1 file changedLine totals unavailable