feat(core): add boolean InternalsController.isSafari

Author: bennypowers

.changeset/curvy-papers-stop.md

@@ -0,0 +1,4 @@
+---
+"@patternfly/pfe-core": minor
+---
+`InternalsController`: added static `isSafari` boolean flag

core/pfe-core/controllers/combobox-controller.ts

@@ -654,7 +654,7 @@ export class ComboboxController<
          */
         if (this.#focusedItem
             && this.options.getComboboxInput()
-            && /^((?!chrome|android).)*safari/i.test(navigator.userAgent)) {
+            && InternalsController.isSafari) {
           this.#announce(this.#focusedItem);
         }
         break;

core/pfe-core/controllers/internals-controller.ts

@@ -83,6 +83,8 @@ export class InternalsController implements ReactiveController, ARIAMixin {
     return Array.from(this.instances.get(host)?.internals.labels ?? []) as Element[];
   }
 
+  public static isSafari: boolean = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);
+
   public static of(
     host: ReactiveControllerHost,
     options?: InternalsControllerOptions,