Fix remaining strict types errors

[millnut]

With Drupal core moving towards strict types, more info we should fix the remaining errors suppressed in the phpstan baseline.

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  Line   modules/contrib/localgov_services/modules/localgov_services_landing/src/Plugin/Field/FieldFormatter/TaxonomyVerticalList.php
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  70     Parameter #1 $items of method Drupal\Core\Field\Plugin\Field\FieldFormatter\EntityReferenceFormatterBase::getEntitiesToView() expects Drupal\Core\Field\EntityReferenceFieldItemListInterface, Drupal\Core\Field\FieldItemListInterface given.
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  Line   modules/contrib/localgov_services/modules/localgov_services_navigation/src/EntityChildRelationshipUi.php
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  125    Call to function in_array() requires parameter #3 to be set.
  132    Parameter #1 $node of method Drupal\localgov_services_navigation\EntityChildRelationshipUi::childrenField() expects Drupal\node\NodeInterface, Drupal\Core\Entity\EntityInterface given.
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  Line   modules/contrib/localgov_services/modules/localgov_services_navigation/tests/src/Kernel/ChildReferencesTest.php
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  73     Call to method Drupal\KernelTests\KernelTestBase::setUp() with incorrect case: setup
  138    Call to function in_array() requires parameter #3 to be set.
  190    Call to function in_array() requires parameter #3 to be set.
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  Line   modules/contrib/localgov_services/modules/localgov_services_navigation/tests/src/Kernel/ParentFieldPathautoTest.php
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  57     Call to method Drupal\KernelTests\KernelTestBase::setUp() with incorrect case: setup
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