[FIX] rma: name column width in tree view

In the tree view, the RMA code (`name` field) tends to lose in the
column width share. The result is will be the trimming of the reference
with ellipsis (...).

As this is very relevant information, we want to ensure a minimum width
for such reference.

TT35107

rma/views/rma_views.xml

@@ -89,7 +89,7 @@
                 decoration-bf="state == 'draft' and product_id == False"
                 decoration-danger="deadline and (deadline < current_date)"
             >
-                <field name="name" />
+                <field name="name" width="100px" />
                 <field name="origin" />
                 <field name="user_id" />
                 <field name="partner_id" />