[IMP] web: Set a max width on company switcher menu

Purpose:
There is no max width on the company name of the 'switch company menu'
of the systray (o_switch_company_menu).
On smaller screens, and when in debug mode, it quickly either
linebreaks the systray of crops the menu items.
So set the max width and text ellipsis on menu.

task-1985500

closes odoo/odoo#43847

Closes: #43847
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>

addons/web/static/src/scss/switch_company_menu.scss

@@ -1,6 +1,9 @@
 
 .o_main_navbar {
     .o_switch_company_menu {
+        > a .oe_topbar_name {
+            @include o-text-overflow($max-width: 250px);
+        }
         .dropdown-item {
             cursor: pointer;