[#2935] Mijn Afspraken: Don't show appoinments from the past

[alextreme]

No description provided.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.13%. Comparing base (ce11922) to head (13bbb2c).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1538   +/-   ##
========================================
  Coverage    94.13%   94.13%           
========================================
  Files         1064     1064           
  Lines        39277    39286    +9     
========================================
+ Hits         36973    36982    +9     
  Misses        2304     2304           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[pi-sigma]

• There is no test that past appointments are actually excluded
• Tests should use freezegun.freezetime instead of manually setting a future date