[FIX] base: fix company logo placeholder

- fix condition to correctly display company logo placeholder
- use avatar_grey on the "Contacts & Addresses" as white on white is not visible
- use `cover` to avoid excessive zoom on mobile

closes #38001

closes odoo/odoo#38267

Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>

addons/web/static/src/scss/kanban_view.scss

@@ -167,6 +167,7 @@
                 min-height: $o-kanban-image-width;
                 align-self: baseline;
                 background: {
+                    size: cover;
                     repeat: no-repeat;
                     position: center;
                 }

odoo/addons/base/views/res_partner_views.xml

@@ -323,7 +323,7 @@
                                                         <img alt="Invoice" t-if="record.type.raw_value === 'invoice'" t-att-src='_s + "/base/static/img/money.png"'/>
                                                         <t t-if="record.type.raw_value !== 'invoice' &amp;&amp; record.type.raw_value !== 'delivery'">
                                                             <img alt="Logo" t-if="record.is_company.raw_value === true" t-att-src='_s + "/base/static/img/company_image.png"'/>
-                                                            <img alt="Avatar" t-if="record.is_company.raw_value === false" t-att-src='_s + "/base/static/img/avatar.png"'/>
+                                                            <img alt="Avatar" t-if="record.is_company.raw_value === false" t-att-src='_s + "/base/static/img/avatar_grey.png"'/>
                                                         </t>
                                                     </t>
                                                 </div>
@@ -524,7 +524,7 @@
                                         <img class="o_kanban_image_inner_pic" t-if="record.parent_id.raw_value" t-att-alt="record.parent_id.value" t-att-src="kanban_image('res.partner', 'image_128', record.parent_id.raw_value)"/>
                                     </div>
                                 </t>
-                                <t t-elif="record.image_128.raw_value">
+                                <t t-else="">
                                     <t t-set="placeholder" t-value="'/base/static/img/company_image.png'"/>
                                     <div class="o_kanban_image_fill_left o_kanban_image_full" t-attf-style="background-image: url(#{kanban_image('res.partner', 'image_128', record.id.raw_value, placeholder)})" role="img"/>
                                 </t>