web: Controller refinements, error handling (#14700)

* web: Partial fix for issue where config is not consistently available.

* web: Fix issues surrounding controller readiness.

* web: Catch abort errors when originating when wrapped by OpenAPI or Sentry.

* web: Fix color on dark mode.

---------

Co-authored-by: Simonyi Gergő <gergo@goauthentik.io>

web/src/elements/forms/ModalForm.ts

@@ -37,6 +37,9 @@ export class ModalForm extends ModalButton {
                 if (this.closeAfterSuccessfulSubmit) {
                     this.open = false;
                     form?.resetForm();
+
+                    // TODO: We may be fetching too frequently.
+                    // Repeat dispatching will prematurely abort refresh listeners and cause several fetches and re-renders.
                     this.dispatchEvent(
                         new CustomEvent(EVENT_REFRESH, {
                             bubbles: true,