PLANET-7647 Enforce consistency on default favicon

src/MasterSite.php

@@ -249,6 +249,9 @@ function () {
         add_action(
             'customize_register',
             function ($wp_customize): void {
+                // Remove site icon customization.
+                $wp_customize->remove_control('site_icon');
+
                 if (!defined('WP_APP_ENV') || ( 'production' !== WP_APP_ENV && 'staging' !== WP_APP_ENV )) {
                     return;
                 }

src/Migrations/M038RemoveCustomSiteIcon.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace P4\MasterTheme\Migrations;
+
+use P4\MasterTheme\MigrationRecord;
+use P4\MasterTheme\MigrationScript;
+
+/**
+ * Remove custom site icon, since we disabled the option to customize it.
+ */
+class M038RemoveCustomSiteIcon extends MigrationScript
+{
+    /**
+     * Perform the actual migration.
+     *
+     * @param MigrationRecord $record Information on the execution, can be used to add logs.
+     * phpcs:disable SlevomatCodingStandard.Functions.UnusedParameter -- interface implementation
+     */
+    protected static function execute(MigrationRecord $record): void
+    {
+        if (!has_site_icon()) {
+            return;
+        }
+        update_option('site_icon', '');
+    }
+    // phpcs:enable SlevomatCodingStandard.Functions.UnusedParameter
+}

src/Migrator.php

@@ -39,6 +39,7 @@
 use P4\MasterTheme\Migrations\M035MigrateCampaignCoversToP4ColumnsBlock;
 use P4\MasterTheme\Migrations\M036RemoveEnFormOptions;
 use P4\MasterTheme\Migrations\M037MigrateCoversContentBlockToPostsListBlock;
+use P4\MasterTheme\Migrations\M038RemoveCustomSiteIcon;
 
 /**
  * Run any new migration scripts and record results in the log.
@@ -95,6 +96,7 @@ public static function migrate(): void
             M035MigrateCampaignCoversToP4ColumnsBlock::class,
             M036RemoveEnFormOptions::class,
             M037MigrateCoversContentBlockToPostsListBlock::class,
+            M038RemoveCustomSiteIcon::class,
         ];
 
         // Loop migrations and run those that haven't run yet.