refactor(ui): apply pb-0 to organization detail container

Extends the tabs-spacing-alignment fix to organization.detail.component.vue
which had the same `<v-container fluid>` parent pattern as user.view.vue
and admin.layout.vue. Brings /users/organizations/:id/* into visual
parity with /users/profile and /admin/* surfaces.

Author: PierreBrisorgueil

src/modules/organizations/components/organization.detail.component.vue

@@ -1,7 +1,8 @@
 <template>
   <div>
-    <!-- Layout chrome: header + tab bar, guttered with their own container -->
-    <v-container fluid>
+    <!-- Layout chrome: header + tab bar, guttered with their own container.
+         pb-0 collapses the gap below tabs — child router-view supplies its own top padding. -->
+    <v-container fluid class="pb-0">
       <!-- Header -->
       <PageHeader
         :title="viewedOrganization ? viewedOrganization.name : 'Organization'"