Issue #3016061 by Anybody, tarunyaduvanshi, hass, apaderno, Gábor Hojtsy,...

Issue #3016061 by Anybody, tarunyaduvanshi, hass, apaderno, Gábor Hojtsy, GNUMatrix, saurabh.rocksoul, Joshua_Lim, finaukaufusi, makbul_khan8: Text format with system name "php_code" is deleted when you view admin/modules/uninstall

php.services.yml

-services:
-  filter.uninstall_validator:
-    class: Drupal\php\PhpUninstallValidator
-    tags:
-      - { name: module_install.uninstall_validator }
-    arguments: ['@plugin.manager.filter', '@entity_type.manager', '@string_translation']
-    lazy: false

src/PhpUninstallValidator.php

-<?php
-
-namespace Drupal\php;
-
-use Drupal\filter\FilterUninstallValidator;
-
-/**
- * Remove filter preventing Php uninstall.
- */
-class PhpUninstallValidator extends FilterUninstallValidator {
-
-  /**
-   * {@inheritdoc}
-   */
-  public function validate($module) {
-    $reasons = [];
-    if ($module == 'php') {
-      $this->removeFilterConfig();
-    }
-    return $reasons;
-  }
-
-  /**
-   * Deletes configuration.
-   */
-  protected function removeFilterConfig() {
-    $php_filter = \Drupal::configFactory()->getEditable('filter.format.php_code');
-    $php_filter->delete();
-
-    // Clear cache.
-    drupal_flush_all_caches();
-  }
-
-}