vim: Change approach to fixing vim's temporary mode bug (#42894)

The `Vim.exit_temporary_normal` method had been updated
(https://github.com/zed-industries/zed/pull/42742) to expect and
`Option<&Motion>` that would then be used to determine whether to move
the cursor right in case the motion was `Some(EndOfLine { ..})`.
Unfortunately this meant that all callers now had to provide this
argument, even if just `None`.

After merging those changes I remember that we could probably play
around with `clip_at_line_ends` so this commit removes those intial
changes in favor of updating the `vim::normal::Vim.move_cursor` method
so that, if vim is in temporary mode and `EndOfLine` is used, it
disables clipping at line ends so that the newline character can be
selected.

Closes [#42278](https://github.com/zed-industries/zed/issues/42278)

Release Notes:

- N/A

crates/editor/src/editor.rs

@@ -3028,6 +3028,10 @@ impl Editor {
         range.clone()
     }
 
+    pub fn clip_at_line_ends(&mut self, cx: &mut Context<Self>) -> bool {
+        self.display_map.read(cx).clip_at_line_ends
+    }
+
     pub fn set_clip_at_line_ends(&mut self, clip: bool, cx: &mut Context<Self>) {
         if self.display_map.read(cx).clip_at_line_ends != clip {
             self.display_map