FEATURE: rebranded admin logos settings (#31554)

Redesigned page to update site logos. `AdminBrandingLogoFormComponent`
is attached to the old logos page and the new branding page. In the next
steps, branding will replace the logos page.

A new `AdminConfigAreaCardSection` component was added hidden and less
frequently used settings.

An image placeholder was also needed because many additional logos have
a fallback to the site logo.

Finally, `twitter_summary_large_image` was renamed to
`x_summary_large_image`.

Desktop
![localhost_4200_admin_config_branding
(4)](https://github.com/user-attachments/assets/b6ae5266-72f6-4582-b0ef-4d05545943e8)


Mobile
![localhost_4200_admin_config_branding(iPhone 12 Pro)
(3)](https://github.com/user-attachments/assets/bf329a5c-9ba0-4d88-b30d-e8f1feb02e31)

db/migrate/20250217003916_x_summary_large_image_based_on_deprecated_setting.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+class XSummaryLargeImageBasedOnDeprecatedSetting < ActiveRecord::Migration[7.2]
+  def up
+    old_setting =
+      DB.query_single(
+        "SELECT value FROM site_settings WHERE name = 'twitter_summary_large_image' LIMIT 1",
+      ).first
+
+    if old_setting.present?
+      DB.exec(
+        "INSERT INTO site_settings(name, value, data_type, created_at, updated_at)
+        VALUES('x_summary_large_image', :setting, '18', NOW(), NOW())",
+        setting: old_setting,
+      )
+    end
+  end
+
+  def down
+    old_setting =
+      DB.query_single(
+        "SELECT value FROM site_settings WHERE name = 'x_summary_large_image' LIMIT 1",
+      ).first
+
+    if old_setting.present?
+      DB.exec(
+        "INSERT INTO site_settings(name, value, data_type, created_at, updated_at)
+        VALUES('twitter_summary_large_image', :setting, '18', NOW(), NOW())
+        ON CONFLICT DO UPDATE",
+        setting: old_setting,
+      )
+    end
+  end
+end