fix RDS Aurora enrollment security group tips

[GavinFrazar]

Changelog: Fixed a bug that prevented selecting security groups during the Aurora database enrollment wizard in the web UI.

Fixes security group tips for RDS aurora mysql/postgres. We weren't populating the security groups for aurora cluster before, so it would throw an error when fetching the security groups to select from.

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[aws-amplify-us-west-2]

This pull request is automatically being deployed by Amplify Hosting (learn more).

Access this pull request here: https://pr-47930.d212ksyjt6y4yg.amplifyapp.com

[kimlisa]

i dont think we need to be checking if !securityGroups at all, is there a reason why? 🤔
this component SelectSecurityGroups.tsx does the fetching of security groups on intial render.

if the fetchign failed for some reason, then we should not be rendering things that require the security groups to be processed (thats a bug)

general ui pattern looks like this with api fetching:

if attempt.status === processing -> render loader

if attempt.status === failed -> render error banner

if attempt.status === success -> then render the stuff that uses the data we were expecting, since we expect data to be defined here, we dont need to check for optional?

[public-teleport-github-review-bot]

@GavinFrazar See the table below for backport results.

Branch	Result
branch/v16	Create PR