[FIX] web: missing gap between listview btn

=== ISSUE ===

If you navigate to MRP and open a work center, there is a missing gap
between the `back` and `login` buttons.

=== AFTER ===

We add a `gap-1` class to the container to make sure these buttons are
correctly spaced

task-3398605
part of task-3326263

closes odoo/odoo#127558

X-original-commit: 76d54c260504ad53df6b2890552e78526abbf704
Signed-off-by: Pierre Paridans (app) <app@odoo.com>

addons/web/static/src/views/list/list_controller.xml

@@ -75,7 +75,7 @@
     </t>
 
     <t t-name="web.ListView.Buttons" owl="1">
-        <div t-if="props.showButtons" class="o_list_buttons d-flex d-empty-none align-items-baseline" role="toolbar" aria-label="Main actions">
+        <div t-if="props.showButtons" class="o_list_buttons d-flex gap-1 d-empty-none align-items-baseline" role="toolbar" aria-label="Main actions">
             <t t-if="model.root.editedRecord">
                 <button type="button" class="btn btn-primary o_list_button_save" data-hotkey="s" t-on-click.stop="onClickSave">
                     Save