firestore: listen_multiple test is flakey #2529
Description
In which file did you encounter the issue?
Did you change the file? If so, how?
no changes
Describe the issue
The listen_multiple firestore sample is flakey, likely due to not waiting appropriately for all of the async events to happen before the assertions.
To fix this flakeyness, someone with good python multithreading knowledge will be needed to add the correct await conditions.