End event time "null" is displayed on the activity card of "Always available" activity

[natalia-muzyka]

Preconditions
User is logged in on the admin panel
Mobile app is installed and launched, user is logged in

Steps to reproduce

1. Open the site
2. Open the applet General calendar
3. Add a new event: Select an activity
4. Save the event card and schedule
5. Refresh the app
6. Proceed to the applet with the scheduled event
7. Pay attention to the end time on the event card

Actual result
End event time "null" is displayed on the activity card of "Always available" activity

Expected result
Actual end event time is displayed on the activity card

Notes: Reproduced on website as well

Environment:
https://admin.mindlogger.org/
https://admin-staging.mindlogger.org/
Win 10 / Chrome 103
ML v0.21.48 staging, prod
iPhone 7 // iOS 13.1.1
Google Pixel 5a // Android 11
Samsung Galaxy Tab S6 SM-T865 // Android 9.0
Apple iPad 9th gen (2021) / iOS 15.5
prod account:
[email protected] / qwerty
applet: Schedule
staging account:
[email protected] / 123456
applet: New applet
Applet password: Qwe123!!!

[e-kass]

Not used in Ped Screener