fix: generic remediator error handling issue

[shuowu-okta]

Issue:

The following error happens when idx.session.expired error happen. It's because generic remediator will always be available and it runs getNextStep fn even it's a terminal error.

message: "Cannot read properties of undefined (reading 'name')"
stack: "TypeError: Cannot read properties of undefined (reading 'name')
    at GenericRemediator.getName (http://localhost:3000/okta-sign-in.next.js:218334:31)
    at GenericRemediator.getNextStep (http://localhost:3000/okta-sign-in.next.js:219412:23)
    at getNextStep (http://localhost:3000/okta-sign-in.next.js:221990:29)
    at handleIdxError (http://localhost:3000/okta-sign-in.next.js:222013:32)
    at _loop$ (http://localhost:3000/okta-sign-in.next.js:217624:53)
    at tryCatch (http://localhost:3000/okta-sign-in.next.js:268845:17)
    at Generator.invoke [as _invoke] (http://localhost:3000/okta-sign-in.next.js:269065:22)
    at prototype.<computed> [as throw] (http://localhost:3000/okta-sign-in.next.js:268898:21)
    at tryCatch (http://localhost:3000/okta-sign-in.next.js:268845:17)
    at maybeInvokeDelegate (http://localhost:3000/okta-sign-in.next.js:269126:18)"

Fix:

Change back to original if...else... logic