vim: Fix escape key switching back to default mode instead of normal mode (#31843)

Closes #31728

This PR introduced new setting `"helix_mode"`. Enabling which will
enable the `vim_mode` along with `helix` behavior.

This solves issue where `vim`'s `default_mode` was being used to switch
between mode instead of opening in `default_mode`.

When `helix_mode` is enabled switcing to `Normal mode` will now switch
to `HelixNormal`


Release Notes:

- Fixed - escape key not switching to normal mode when default_mode is
insert
- Added - `helix_mode` setting to enable/disable helix key bindings

---------

Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

crates/vim/src/normal/paste.rs

@@ -3,7 +3,9 @@ use gpui::{Context, Window, impl_actions};
 use language::{Bias, SelectionGoal};
 use schemars::JsonSchema;
 use serde::Deserialize;
+use settings::Settings;
 use std::cmp;
+use vim_mode_setting::HelixModeSetting;
 
 use crate::{
     Vim,
@@ -218,7 +220,11 @@ impl Vim {
             });
         });
 
-        self.switch_mode(self.default_mode(cx), true, window, cx);
+        if HelixModeSetting::get_global(cx).0 {
+            self.switch_mode(Mode::HelixNormal, true, window, cx);
+        } else {
+            self.switch_mode(Mode::Normal, true, window, cx);
+        }
     }
 
     pub fn replace_with_register_object(