Add ability to dismiss alert

Rerolled the patch to match with the new release 8.x-1.3

Patch in #63 failed to apply on the new release 8.x-1.3.

$ composer install
Gathering patches for root package.
Removing package drupal/site_alert so that it can be re-installed and re-patched.
  - Removing drupal/site_alert (1.3.0)
Deleting docroot/modules/contrib/site_alert - deleted
Installing dependencies from lock file (including require-dev)
Verifying lock file contents can be installed on current platform.
Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. It is recommended that you run `composer update` or `composer update <package name>`.
Package operations: 1 install, 0 updates, 0 removals
Gathering patches for root package.
Gathering patches for dependencies. This might take a minute.
  - Installing drupal/site_alert (1.3.0): Extracting archive
  - Applying patches for drupal/site_alert
    https://www.drupal.org/files/issues/2020-06-25/3154942-2.patch (3154942-2: Separate AJAX target from wrapper)
    https://www.drupal.org/files/issues/2020-08-17/3151256-3.patch (3151256-3: Allow the ability to add multiple blocks)
    https://www.drupal.org/files/issues/2023-02-15/3156557-63.patch (3156557-63: Add ability to dismiss alert)
   Could not apply patch! Skipping. The error was: Cannot apply patch https://www.drupal.org/files/issues/2023-02-15/3156557-63.patch

In Patches.php line 326:
                                                                                                                                  
  Cannot apply patch 3156557-63: Add ability to dismiss alert (https://www.drupal.org/files/issues/2023-02-15/3156557-63.patch)!  
                                                                                                                                  

install [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--dry-run] [--dev] [--no-suggest] [--no-dev] [--no-autoloader] [--no-progress] [--no-install] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--apcu-autoloader-prefix APCU-AUTOLOADER-PREFIX] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--] [<packages>...]

The patch applies well on the last release, be aware you are using several patches on that module, there might be a conflict there.

Patch #63 was missing some new files that got missed during the re roll. I have updated the patch. Please try using this and see if it works. Also keep in in mind as rpayanm mentioned, using other patches might create conflicts as well.

I have done some testing as well just to check the patch I submitted works as expected and patch #67 is working for me. Please see the screenshots below -