Custom tag search is broken

### Environment

SaaS (https://sentry.io/)

### Steps to Reproduce

1. Open the issue, click on Custom next to Tags
2. Select the custom tag "status", then click on the three dot dropdown menu next to it
3. Click on _Search issues with this tag value_

For more information, please check the [shadow Jira ticket.](https://getsentry.atlassian.net/jira/software/c/projects/FEEDBACK/boards/52?selectedIssue=ISSUE-1726)

### Expected Result

All issues that have this tag value should appear on the issues page

### Actual Result

An error appears that says: Error parsing search query: invalid status value of '500'

### Product Area

Issues

### Link

_No response_

### DSN

_No response_

### Version

_No response_