Filter members by location missing ?

[SamiNassim]

Issue Summary

Hi,

We are using Ghost Pro and we can't seem to be able to sort by location. We can sort by every field except location.

Currently, we have a very large user base and many of them are bots that usually come from the same location. Being able to filter them would allow us to delete them with the "Delete selected members" feature.

Thanks for your help.

Steps to Reproduce

1. Go to the dashboard, Members
2. Click on Filter
3. Filter by location is missing

Ghost Version

6.9.1-0-g5c89e25d+moya

Node.js Version

Ghost Pro

How did you install Ghost?

Ghost Pro

Database type

MySQL 5.7

Browser & OS version

No response

Relevant log / error output

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