fix: hide paid column and add tests

lib/mv_web/live/member_live/index.html.heex

@@ -2,13 +2,6 @@
   <.header>
     {gettext("Members")}
     <:actions>
-      <.live_component
-        module={MvWeb.Components.FieldVisibilityDropdownComponent}
-        id="field-visibility-dropdown"
-        all_fields={@all_available_fields}
-        custom_fields={@all_custom_fields}
-        selected_fields={@user_field_selection}
-      />
       <.button
         :if={Enum.any?(@members, &MapSet.member?(@selected_members, &1.id))}
         id="copy-emails-btn"
@@ -46,6 +39,13 @@
       paid_filter={@paid_filter}
       member_count={length(@members)}
     />
+    <.live_component
+      module={MvWeb.Components.FieldVisibilityDropdownComponent}
+      id="field-visibility-dropdown"
+      all_fields={@all_available_fields}
+      custom_fields={@all_custom_fields}
+      selected_fields={@user_field_selection}
+    />
   </div>
 
   <.table
@@ -247,7 +247,7 @@
     >
       {member.join_date}
     </:col>
-    <:col :let={member} label={gettext("Paid")}>
+    <:col :let={member} :if={:paid in @member_fields_visible} label={gettext("Paid")}>
       <span class={[
         "badge",
         if(member.paid == true, do: "badge-success", else: "badge-error")