QoS: frequent crashes with 'undefined == true' assert in enqueMessages

[KRyan]

https://dataexplorer.azure.com/clusters/kusto.aria.microsoft.com/databases/6a8929bcfc6d44e9b13fee392ada9cf0?query=H4sIAAAAAAAAAx2NMQ6CQBBFe07xOyAxIR6Awii2NvabZXdWJsJAhl2IhsMLlu/n/byqwrVn94YVD02CjpQQRsW4kC5MK6KS+OwRAjsy9z6xN5dpMo3qbm1Y/4+bjdYMNM/2Rahr5Ek8BRbyB0VNlGcb5jQMVvlLcGOSWJRoP2hZimYhiebJA51w9uWuHlFSxH1yndX4A/UUiBSpAAAA

// For chart run:
Office_Fluid_App_Error | where Data_message == 'undefined == true'
| summarize count() by bin(Event_Time, 1d)
| render timechart

// For random sessions run:
Office_Fluid_App_Error | where Data_message == 'undefined == true' | take 20

AssertionError: undefined == true
at W.enqueueMessages
at W.catchUp
at W.enqueInitalOps
at W.processInitialMessages

@ashwinmayya, @ZeguangWu, @anthony-murphy FYI

[vladsud]

This is already fixed in all latest release/10.0 builds, at least from Thursday last week.
It was back port from master, so master is good too.