[FIX] web: list: call mounted on subcomponents at reload

Issue was spotted in list views containing the "badge" widget with
decorations (e.g. in the Purchase Order list view). At first, the
decorations were correctly applied, but they weren't anymore after
a reload (e.g. after toggling a filter).

They weren't because the list renderer didn't called
'on_attach_callback' on its subwidgets at reload (thus, 'mounted'
wasn't called on its subcomponents, and the decorations are applied
in the mounted hook).

This commit moves the logic from the FormRenderer to the
BasicRenderer, so that it applies on List, Kanban, and Form views.

This commit also removes the transition scss rule on the badge
field widget as it caused a flickering at reload.

Task 2336440

closes odoo/odoo#57766

X-original-commit: 713bce22e8f412f2c26e663b9e30fdd64933ff0c
Signed-off-by: Michaël Mattiello <mcm-odoo@users.noreply.github.com>
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>

addons/web/static/tests/fields/basic_fields_tests.js

@@ -7606,7 +7606,7 @@ QUnit.module('basic_fields', {
     });
 
     QUnit.test('FieldBadge component with decoration-xxx attributes', async function (assert) {
-        assert.expect(3);
+        assert.expect(6);
 
         const list = await createView({
             View: ListView,
@@ -7623,6 +7623,12 @@ QUnit.module('basic_fields', {
         assert.containsOnce(list, '.o_field_badge[name="foo"].bg-danger-light');
         assert.containsOnce(list, '.o_field_badge[name="foo"].bg-warning-light');
 
+        await list.reload();
+
+        assert.containsN(list, '.o_field_badge[name="foo"]', 5);
+        assert.containsOnce(list, '.o_field_badge[name="foo"].bg-danger-light');
+        assert.containsOnce(list, '.o_field_badge[name="foo"].bg-warning-light');
+
         list.destroy();
     });
 });