The task is about the following:

• Set-up the sbe executor for yielding (SERVER-64007)
• Making the yield-safe plans default (internalCascadesOptimizerDisableYieldingTolerantPlans defaults to false)
• Make sure we test both yielding and non-yielding scenarios. Yielding may be rationalized in the future to an extent we do not need to specifically handle it on the query level, and we should strive to preserve a reasonable level of testability for either scenario.