vim: Add neovim 0.11 default mappings (#28602)

Update the keymap to include:
https://neovim.io/doc/user/news-0.11.html#_defaults

This does conflict with `gr` replace with register though, is `gR` a
good alternative?

Release Notes:

- vim: Update the keymap to include: https://neovim.io/doc/user/news-0.11.html#_defaults
- vim: Replace with register has been remapped from `gr` to `gR`.

docs/src/vim.md

@@ -164,7 +164,7 @@ Zed's vim mode includes some features that are usually provided by very popular
 - You can comment and uncomment selections with `gc` in visual mode and `gcc` in normal mode.
 - The project panel supports many shortcuts modeled after the Vim plugin `netrw`: navigation with `hjkl`, open file with `o`, open file in a new tab with `t`, etc.
 - You can add key bindings to your keymap to navigate "camelCase" names. [Head down to the Optional key bindings](#optional-key-bindings) section to learn how.
-- You can use `gr` to do [ReplaceWithRegister](https://github.com/vim-scripts/ReplaceWithRegister).
+- You can use `gR` to do [ReplaceWithRegister](https://github.com/vim-scripts/ReplaceWithRegister).
 - You can use `cx` for [vim-exchange](https://github.com/tommcdo/vim-exchange) functionality. Note that it does not have a default binding in visual mode, but you can add one to your keymap (refer to the [optional key bindings](#optional-key-bindings) section).
 - You can navigate to indent depths relative to your cursor with the [indent wise](https://github.com/jeetsukumaran/vim-indentwise) plugin `[-`, `]-`, `[+`, `]+`, `[=`, `]=`.