[FIX] website_crm: restrict CRM columns to users having CRM rights

If leads are created using live chat, users without CRM rights cannot
access the visitors list anymore because the lead/opportunity
information is not available to them.

This commit limits the display of `lead_count` to the
`sales_team.group_sale_salesman` group.

Then, the visitor's form cannot be accessed because the "Lead" smart
button fails to load.
This commit therefore limits the display of the button to that same
`sales_team.group_sale_salesman` group.

In 14.0, the column still appeared without the `lead_count` value
displayed, but clicking on it raised a traceback.

Steps to reproduce:
- Install `website_crm_livechat`
- Login as Mitchell Admin
- Send a message in the live chat
- Go to Discuss
- Answer the livechat message with `/lead New`
- Go to Settings / Users / Marc Demo
- Remove the Sales rights
- Logout
- Login as Marc Demo
- Go to the Website / Reporting / Visitors page

=> The page could not be reached and an access right error message was
generated.

opw-3475301

closes odoo/odoo#135571

X-original-commit: 4f67701f99e4b86cb0a4330a32b455bd6ff4686a
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>
Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>
Co-authored-by: Robin Lejeune (role) <role@odoo.com>

addons/website_crm/views/website_visitor_views.xml

@@ -7,6 +7,7 @@
         <field name="arch" type="xml">
             <xpath expr="//button[@id='w_visitor_visit_counter']" position="before">
                 <button name="%(website_crm.crm_lead_action_from_visitor)d" type="action" class="oe_stat_button" icon="fa-star"
+                        groups="sales_team.group_sale_salesman"
                         invisible="lead_count == 0">
                     <field name="lead_count" widget="statinfo" string="Leads"/>
                 </button>
@@ -48,7 +49,7 @@
                 <field name="lead_count"/>
             </field>
             <xpath expr="//div[@id='o_page_count']" position="after">
-                <div t-if="record.lead_count.raw_value">
+                <div t-if="record.lead_count.raw_value" groups="sales_team.group_sale_salesman">
                     Leads / Opportunities
                     <span class="float-end fw-bold">
                         <field name="lead_count"/>
@@ -56,7 +57,7 @@
                 </div>
             </xpath>
             <xpath expr="//div[@id='wvisitor_visited_page']" position="after">
-                <div class="col-lg col-sm-4 col-6 py-0 my-2">
+                <div class="col-lg col-sm-4 col-6 py-0 my-2" groups="sales_team.group_sale_salesman">
                     <span t-att-class="record.lead_count.raw_value ? 'fw-bold' : 'text-muted'">
                         <field name="lead_count"/>
                     </span>