Distinguish waiting for notify status from suspend status (#865)

Distinguish waiting for notify status from suspend status (#865)

* Fix prvTaskIsTaskSuspended.

Just like eTaskGetState, distinguish waiting for notify from suspend.

* Fix vTaskGetInfo.

Just like eTaskGetState, distinguish block state (waiting on notification)
from suspend state.

* Add missing definition of variable x.

* Fix formatting syntax.

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Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>
Co-authored-by: Tony Josi <tonyjosi@amazon.com>