[Okta SCIM] Owner being changed to Member after logging in

### Environment

SaaS (https://sentry.io/)

### Steps to Reproduce

Hello team, a customer of ours recently turned on Okta SCIM for their org but they're running into some issues with the Owner role specifically. The Owner is manually provisioned through Sentry, but every time this user logs in, they are being changed back to the Member role and is having to rejoin all teams.

1. User is provisioned with blank role in Okta
2. Same user is manually given the Owner role in Sentry
3. User logs in to Sentry by going to Okta -> Apps -> Sentry
4. User's role is changed to Member and they are not a part of any team. Needs to rejoin the teams they want to be in

For Okta settings: Create Users, Update User Attributes, and Deactivate Users are all enabled.

All other roles (Member, Admin, and Manager) have been working as expected.

### Expected Result

Owners will be provisioned with a blank role in Okta, and then manually provisioned in Sentry, and they can log in through SSO as usual.

### Actual Result

User's role is changed to Member and they are not a part of any team. Needs to rejoin the teams they want to be in.

### Product Area

Sign In

### Link

_No response_

### DSN

_No response_

### Version

_No response_

┆Issue is synchronized with this [Jira Improvement](https://getsentry.atlassian.net/browse/FEEDBACK-1938) by [Unito](https://www.unito.io)