UHF-9496: Add form states

modules/hdbt_admin_tools/hdbt_admin_tools.module

@@ -147,6 +147,24 @@ function hdbt_admin_tools_form_node_form_alter(&$form, &$form_state, $form_id):
   $form['actions']['submit']['#submit'][] = 'hdbt_admin_tools_node_form_submit_callback';
 }
 
+/**
+ * Implements hook_form_FORM_ID_alter().
+ */
+function hdbt_admin_tools_form_tpr_unit_form_alter(&$form, &$form_state, $form_id): void {
+  $form['field_phone_label']['#states'] = [
+    'visible' => [
+      ':input[name="field_phone_with_contacts[value]"]' => ['checked' => TRUE],
+    ],
+  ];
+
+  // Required state must the widget rather than the form element.
+  $form['field_phone_label']['widget'][0]['value']['#states'] = [
+    'required' => [
+      ':input[name="field_phone_with_contacts[value]"]' => ['checked' => TRUE],
+    ],
+  ];
+}
+
 /**
  * Form submit callback for node forms.
  *