erp5_base: Add Comment property_sheet to Bank Account

Since BankAccount_view already has a my_comment field

bt5/erp5_base/PortalTypePropertySheetTemplateItem/property_sheet_list.xml

 <property_sheet_list>
+ <portal_type id="Bank Account">
+  <item>Comment</item>
+ </portal_type>
  <portal_type id="External Identifier">
   <item>Base</item>
   <item>Coordinate</item>

bt5/erp5_base/bt/template_portal_type_property_sheet_list

+Bank Account | Comment
 External Identifier | Base
 External Identifier | Coordinate
 External Identifier | SimpleItem