Add a drush command for rebuilding preview sites

+++ b/src/PreviewSiteBuilder.php
@@ -221,7 +221,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
-  public static function operationMarkDeploymentStarted(int $build_id, array &$context) {
+  public static function operationMarkDeploymentStarted(int $build_id, &$context) {
     $context['results']['build_id'] = $build_id;
     PreviewSiteBuild::load($build_id)->startDeployment(\Drupal::state());
     $context['message'] = new TranslatableMarkup('Marked deployment as building');
@@ -238,7 +238,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {

@@ -238,7 +238,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
   /**
    * Batch callback.
    */
-  public static function operationProcessGenerate(int $build_id, array &$context) {
+  public static function operationProcessGenerate(int $build_id, &$context) {
     $remaining = self::factory()->processSiteGeneration(PreviewSiteBuild::load($build_id));
     self::updateFinishedPercent($remaining, $context);
     $context['results']['generated'] = ($context['results']['generated'] ?? 0) + 1;
@@ -248,7 +248,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {

@@ -248,7 +248,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
   /**
    * Batch callback.
    */
-  public static function operationProcessAssets(int $build_id, array &$context) {
+  public static function operationProcessAssets(int $build_id, &$context) {
     $remaining = self::factory()->processAssetGeneration(PreviewSiteBuild::load($build_id));
     self::updateFinishedPercent($remaining, $context);
     $context['results']['assets'] = ($context['results']['assets'] ?? 0) + 1;
@@ -266,7 +266,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {

@@ -266,7 +266,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
   /**
    * Batch callback.
    */
-  public static function operationProcessDeploy(int $build_id, array &$context) {
+  public static function operationProcessDeploy(int $build_id, &$context) {
     $remaining = self::factory()->processSiteDeployment(PreviewSiteBuild::load($build_id));
     self::updateFinishedPercent($remaining, $context);
     $context['results']['deployed'] = ($context['results']['deployed'] ?? 0) + 1;
@@ -276,7 +276,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {

@@ -276,7 +276,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
   /**
    * Batch callback.
    */
-  public static function operationMarkDeploymentFinished(int $build_id, array &$context) {
+  public static function operationMarkDeploymentFinished(int $build_id, &$context) {
     /** @var \Drupal\preview_site\Entity\PreviewSiteBuildInterface $build */
     $build = PreviewSiteBuild::load($build_id);
     if (!isset($context['sandbox']['clean_up_file_ids'])) {
@@ -338,7 +338,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {

@@ -338,7 +338,7 @@ class PreviewSiteBuilder implements ContainerInjectionInterface {
    * @param array $context
    *   Batch context.
    */
-  protected static function updateFinishedPercent(int $remaining, array &$context): void {
+  protected static function updateFinishedPercent(int $remaining, &$context): void {

some out of scope changes here