[FIX] mail: do not refocus search bar on click category bar

Before this commit, when clicking on category in category bar,
the search bar was (re-)focused.

It was flickering, especially when device prompt a soft keyboard,
such as on mobile.

This commit fixes the issue by not (re-)focusing the search bar
when clicking on a category from the category bar.

Task-3013819

closes odoo/odoo#102987

X-original-commit: 61790c029b3b78c2a099ec72b0d688c28d803374
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/mail/static/src/models/emoji_search_bar_view.js

@@ -41,7 +41,6 @@ registerModel({
         reset() {
             this.update({ currentSearch: "" });
             this.inputRef.el.value = "";
-            this.update({ isDoFocus: true });
         },
         /**
          * @private