Add nullsafety to the deletedStep state filter check (#1047)

* feat: refactor legal form implementation

* test: add unit test

* refact: display the first LegalName and set default value from basic data

* fix: clean up

* refact: add formProvider to the others step to be able to work on trixo

* refact: trixo improvement

* test: add trixo integration test

* fix: review legal form

* refactor/wip: still working on certificate step label component

* refactor: improve stepper label

* refactor: make the step label clickable

* fix: update copy

* fix/wip: register endpoint should not be call on login

* fix: reset modal

* skip test

* fix: review modal state issue

* fix: review clear all form

* refact: reset state after clear all form

* fix: modal copy

* skip test

* fix: delete register endpoint  params

* refactor: set initial state at the overview page

* refactor: create a separate hook for file upload with the new request

* refact/wip: improve data fetching

* fix: highlight certificate label issue

* fix conflict

* refactor: reset form after clear button action & update delete request endpoint url

* refactor: set current step status to progress

* improve basic detail

* refactor: hard coded page reload

* clean up

* add reload for fail uploaded file

* minor fix

* add default state

* add nullsafety

* clean up

web/gds-user-ui/src/hooks/useCertificateStepper.tsx

@@ -230,9 +230,10 @@ const useCertificateStepper = () => {
   };
 
   const isStepDeleted = (step: string) => {
-    const elm = Store.getState().stepper.deletedSteps;
-    const found = elm.filter((s: TDeleteStep) => s.step === step && s.isDeleted === true);
-    return found.length > 0;
+    const elm = Store.getState()?.stepper?.deletedSteps;
+    if (!elm) return false;
+    const found = elm?.filter((s: TDeleteStep) => s.step === step && s.isDeleted === true);
+    return found?.length > 0;
   };
 
   return {