Function on flex consumption cancelling <100ms under heavy load

Github issue #10693

Testing

Deploy the infrastructure to Azure

az login
az deployment sub create \
    --name azure-functions-host-issue-10693 \
    --location australiaeast \
    --template-file ./deploy/main.bicep

Deploy the code

cd src
func azure functionapp publish jbh-au-azure-functions-host-issue-10693-funcfc--no-build

Trigger the function

cd console
STORAGE_CONNECTIONSTRING="Copy connection string from jbhauafh1sa"
dotnet run -c Release