Marker info text token output needs improvement

The Google Map formatter needs to clear the tokens if the field/source is empty and a replacement can't be found.

/Plugin/FIeld/FieldFormatter/GeolocationGoogleMapFormatter.php
Line 212:

- $content = \Drupal::token()->replace($settings['info_text'], $token_context, ['callback' => [$this, 'geolocationItemTokens']]);
+  $content = \Drupal::token()->replace($settings['info_text'], $token_context, ['callback' => [$this, 'geolocationItemTokens'], 'clear' => TRUE]);

API: Token::replace

Also the returned token replacements need to passed to the theme layer as a render array otherwise the output will display markup as a string,

/Plugin/FIeld/FieldFormatter/GeolocationGoogleMapFormatter.php
Line 214:

$content = \Drupal::token()->replace($settings['info_text'], $token_context, ['callback' => [$this, 'geolocationItemTokens'], 'clear' => TRUE]);
+ $content = \Drupal\Core\Render\Markup::create($content);

Sorry I would supply a patch but I'm unlikely to create it cleanly.