chore(addons): Simplify computed property

Author: futa-ikeda

src/app/shared/components/addons/addon-setup-account-form/addon-setup-account-form.component.ts

@@ -62,9 +62,7 @@ export class AddonSetupAccountFormComponent {
     return format === CredentialsFormat.OAUTH2 || format === CredentialsFormat.OAUTH;
   });
 
-  readonly hasConfigurableApiRoot = computed(() => {
-    return this.addon().configurableApiRoot === true;
-  });
+  readonly hasConfigurableApiRoot = computed(() => !!this.addon().configurableApiRoot);
 
   handleSubmit(): void {
     if (!this.isFormValid) return;