Unverified email shouldn't be able to get free tickets

[anhanh11001]

Describe the bug
Unverified email shouldn't be able to get ticket

Would you like to work on the issue?
Yes

[ShridharGoel]

Please have a look at fossasia/open-event-server#5970 and fossasia/open-event-server#5760

[ShridharGoel]

Also, this is something that the server should handle.

[shreyanshdwivedi]

@liveHarshit @anhanh11001 so are we going to disallow guest/unauthenticated users to buy free tickets?

[liveHarshit]

so are we going to disallow guest/unauthenticated users to buy free tickets?

Yes, as discussed by @mariobehling

[liveHarshit]

@anhanh11001 Working on it as Issue #1887 solved.

[iamareebjamal]

@shreyanshdwivedi Please ensure this check is on the server