=== ISSUE ===
In some modules, there is a recurring layout issue with buttons being
compressed. This is caused by a missing `gap` or `margin` and
results in two main issues :
1/ It reduces the clickable zone of each button (you are more likely
to click on its neighbor rather than the one you wanted)
2/ It does not look good and causes inconsistency with other buttons.
=== AFTER ===
We simply add a `d-flex` and a `gap-1` class to the container to be sure
that no matter how many buttons are inside that <div> they will
always be spaced correctly.
task-3433602
part of task-3326263
closesodoo/odoo#129906
X-original-commit: 6fc57407478e79232e46c21e21981eeff419d884
Signed-off-by: Pierre Paridans (app) <app@odoo.com>