Fix writes from insert mode not properly updating the revision history

ref: helix-editor/helix#3501
ref: helix-editor/helix#6513
ref: helix-editor/helix#7226

Author: omentic

helix-term/src/ui/editor.rs

@@ -850,6 +850,10 @@ impl EditorView {
         cxt.editor.autoinfo = self.keymaps.sticky().map(|node| node.infobox());
 
         let mut execute_command = |command: &commands::MappableCommand| {
+            let doc = doc_mut!(cxt.editor);
+            let view = view_mut!(cxt.editor);
+            doc.append_changes_to_history(view);
+
             command.execute(cxt);
             helix_event::dispatch(PostCommand { command, cx: cxt });