Revert "Remove contact form legacy admin files (#43821)"

This reverts commit 1eb95a6.

Author: CGastrell

projects/packages/forms/.phan/baseline.php

@@ -20,12 +20,14 @@
     // PhanDeprecatedClass : 1 occurrence
     // PhanPluginMixedKeyNoKey : 1 occurrence
     // PhanPossiblyNullTypeMismatchProperty : 1 occurrence
+    // PhanTypeArraySuspiciousNullable : 1 occurrence
     // PhanTypeMismatchReturnNullable : 1 occurrence
     // PhanUnreferencedUseNormal : 1 occurrence
 
     // Currently, file_suppressions and directory_suppressions are the only supported suppressions
     'file_suppressions' => [
         'src/abilities/class-forms-abilities.php' => ['PhanUndeclaredFunction'],
+        'src/contact-form/class-admin.php' => ['PhanPluginDuplicateConditionalNullCoalescing', 'PhanTypeArraySuspiciousNullable', 'PhanTypeMismatchArgument', 'PhanTypeMismatchArgumentProbablyReal', 'PhanTypeMismatchReturn'],
         'src/contact-form/class-contact-form-field.php' => ['PhanPluginDuplicateConditionalNullCoalescing', 'PhanPossiblyNullTypeMismatchProperty', 'PhanTypeConversionFromArray', 'PhanTypeMismatchArgument', 'PhanTypeMismatchReturnProbablyReal'],
         'src/contact-form/class-contact-form-plugin.php' => ['PhanPluginDuplicateAdjacentStatement', 'PhanPluginDuplicateConditionalNullCoalescing', 'PhanTypeMismatchArgument', 'PhanTypeMismatchArgumentProbablyReal', 'PhanTypeMismatchReturnProbablyReal'],
         'src/contact-form/class-contact-form-shortcode.php' => ['PhanPluginDuplicateConditionalNullCoalescing', 'PhanTypeMismatchReturnProbablyReal'],

projects/packages/forms/changelog/remove-contact-form-legacy-admin-files

@@ -34,8 +34,12 @@ Classes that handle form rendering and processing:
 
 Classes for admin and user-facing interfaces:
 
+- **Admin** - Admin interface for viewing and managing form submissions. Provides list tables and detail views for feedback posts.
+
 - **Editor_View** - Handles form display in the block editor. Provides live previews and editing capabilities.
 
+- **Form_View** - Renders forms on the frontend. Handles HTML generation, validation display, and success messages.
+
 ### Utilities
 
 Helper classes: