Users page caching leads to incorrect avatar and reputation

[trichoplax]

Describe the bug
The Users page sometimes shows the incorrect avatar and reputation at the top right of the page (where the currently signed in user's details should be).

To Reproduce
Steps to reproduce the behavior:

1. Go to https://linux.codidact.com/users (or equivalent on another community - this is the one I saw it on).
2. Sometimes see incorrect signed in user details (this appears to be rare, and I don't know a way to reliably reproduce it).

Expected behavior
The current user's avatar and reputation should always show at the top right of the page.

Screenshots
I was signed in (trichoplax, reputation 1) but samcarter's avatar and reputation show at the top right:

[trichoplax]

Similar (not sure if related): #1553