Issue #3163415 part 1: Fix Drupal 9.1 deprecations

tests/src/Functional/Views/AdministrativeAreaFilterTest.php

@@ -15,7 +15,7 @@ class AdministrativeAreaFilterTest extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = [
+  protected static $modules = [
     'node',
     'user',
     'views',

tests/src/FunctionalJavascript/AddressDefaultWidgetTest.php

@@ -21,7 +21,7 @@ class AddressDefaultWidgetTest extends WebDriverTestBase {
    *
    * @var array
    */
-  public static $modules = [
+  protected static $modules = [
     'system',
     'language',
     'user',

tests/src/FunctionalJavascript/DefaultValueTest.php

@@ -16,7 +16,7 @@ class DefaultValueTest extends WebDriverTestBase {
    *
    * @var array
    */
-  public static $modules = [
+  protected static $modules = [
     'node',
     'address',
     'address_test',

tests/src/Kernel/Formatter/FormatterTestBase.php

@@ -16,7 +16,7 @@ abstract class FormatterTestBase extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = [
+  protected static $modules = [
     'system',
     'field',
     'language',

tests/src/Kernel/Plugin/migrate/field/AddressFieldTest.php

@@ -18,7 +18,7 @@ class AddressFieldTest extends KernelTestBase {
    *
    * @var array
    */
-  public static $modules = [
+  protected static $modules = [
     'address',
     'migrate',
     'migrate_drupal',