Team Calendars permission checks performance breaks the visualization of large calendars

Issue Summary

Team Calendars permission checks performance breaks the visualization of large calendars with hundreds of events.

Steps to Reproduce

1. Have a space with multiple calendars and hundreds of events in each.
2. Open the Team Calendars for the space in question.

Expected Results

The calendars are loaded.

Actual Results

Calendars fail to load with the error

Something went wrong.
Please try again later.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available