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_geo/modules/localgov_geo_address/tests/Functional/AddressFormsTest.php
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  107    Call to static method Drupal\Component\Utility\Html::escape() with incorrect case: Escape
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  Line   modules/contrib/localgov_geo/modules/localgov_geo_update/src/MigrateDisplayModes.php
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  200    Variable $new_config in empty() is never defined.
  201    Undefined variable: $new_config
  224    Variable $new_base_array might not be defined.
  227    Variable $new_base_array might not be defined.
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  Line   modules/contrib/localgov_geo/modules/localgov_geo_update/tests/modules/localgov_geo_update_to_geo_test/src/Element/AutocompleteAddress.php
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  75     Variable $url might not be defined.
  76     Variable $url might not be defined.
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  Line   modules/contrib/localgov_geo/modules/localgov_geo_update/tests/modules/localgov_geo_update_to_geo_test/src/Plugin/Field/FieldWidget/AutocompleteAddress.php
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  255    Parameter #2 $callback of function uasort expects callable(Drupal\Core\Entity\EntityInterface, Drupal\Core\Entity\EntityInterface): int, Closure(Drupal\geocoder\Entity\GeocoderProvider, Drupal\geocoder\Entity\GeocoderProvider): (-1|0|1) given.
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