[FIX] public_budget: permitir visualizar transacciones a usuario portal

closes #486

Ticket: 61849
X-original-commit: 8a4a4bf
Signed-off-by: Nicolas Mac Rouillon <nmr@adhoc.com.ar>

public_budget/security/ir.model.access.csv

@@ -170,3 +170,4 @@ public_budget.access_public_budget_budget_analysis_wizard,access_public_budget_b
 public_budget.access_public_budget_advance_request_report_wizard,access_public_budget_advance_request_report_wizard,public_budget.model_public_budget_advance_request_report_wizard,base.group_user,1,0,0,0
 public_budget.access_public_budget_preventive_change_position,access_public_budget_preventive_change_position,public_budget.model_public_budget_preventive_change_position,base.group_user,1,0,0,0
 public_budget.access_public_budget_transfer_asset_wizard,access_public_budget_transfer_asset_wizard,public_budget.model_public_budget_transfer_asset_wizard,base.group_user,1,0,0,0
+access_public_budget_mail_activity_portal,access_public_budget_mail_activity_portal,mail.model_mail_activity,group_portal_expedient,1,0,0,0