Email invitations shenanigans - Followup on #19225

### Describe the bug

https://github.com/goauthentik/authentik/issues/19225

I have gotten the test email to work successfully, however whenever I try to do an invite it just returns 554 error
(554, b'5.0.0 Error: The sender or recipient address is not valid. Review the addresses and resend the message')

Which is a known thing with the protonmail bridge, it needs the sender \ return email to be the protonmail account or one of the linked email addresses

the ak test_email works flawlessly, email is delivered
invite does not

Do these two ways of delivering email not share the same docker env variables ?

### How to reproduce

Configure email in authentik
Do ak test email - watch it work
Do invite - watch it fail

### Expected behavior

email to be delivered

### Screenshots

_No response_

### Additional context

_No response_

### Deployment Method

Docker

### Version

2026.5.6

### Relevant log output

```shell

```