fix: search box autofilling with username

app/assets/javascripts/views/challenge_modal/challenge_modal.tsx

@@ -374,6 +374,7 @@ function ChallengePrompts({
         </div>
       ) : (
         <div key={prompt.id} className="sk-panel-row">
+          <form className="w-full">
             <input
               className="sk-input contrast"
               value={ctrl.state.values[prompt.id]!.value as string | number}
@@ -392,6 +393,7 @@ function ChallengePrompts({
               placeholder={prompt.title}
               type={prompt.secureTextEntry ? 'password' : 'text'}
             />
+          </form>
         </div>
       )}