[IMP] web: fix UI glitch on image widget when too smal image

with this commit, we fixes UI glitch on image widget when image is too small,
when hovering over too small image Edit and Delete icon will ne displayed but
it is displayed with glitch, so to avoid that glitch we added min-width to
icons div.

task-2376452

closes odoo/odoo#66056

X-original-commit: 7aaad848
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/web/static/src/scss/fields.scss

@@ -381,6 +381,7 @@
             background-color: $o-brand-primary;
             opacity: 0;
             transition: opacity ease 400ms;
+            min-width: 35px;
 
             > button.fa {
                 border: none;