[FIX] sale_timesheet: allow billing user in journal entries

Since a timesheet is an analytic line, access rights are mixed for
timesheet manager and billing user, when hr_timesheet is installed.
Group mecanism use logical 'OR' between none global rules, so timesheet
access restrict the one of billing user. The ir.rule of sale_timesheet
tries to restore the access of billing user (which can thus modified
timesheet. This point is unfixable, unfortunately). This commit
completely restore (even for 'read' access) the rule for billing user,
otherwise such user can not validate an invoice if they are timesheet user.

opw-2001421

closes odoo/odoo#33575

Signed-off-by: Jérome Maes (jem) <jem@openerp.com>

addons/sale_timesheet/security/sale_timesheet_security.xml

@@ -11,7 +11,7 @@
             <field name="perm_create" eval="1"/>
             <field name="perm_write" eval="1"/>
             <field name="perm_unlink" eval="1"/>
-            <field name="perm_read" eval="0"/>
+            <field name="perm_read" eval="1"/>
         </record>
 
     </data>