http-max-bytes-in-flight-mb = 4096 fails, should generate config error on nodeos startup

[matthewdarwin]

Followup from: #46

http-max-bytes-in-flight-mb = 4096 is too big, but http-max-bytes-in-flight-mb = 4095 works fine.

If there is a maximum limit, there should be a hard fail. Realistically setting it this big is a bit crazy.

$ cleos get info
error 2022-08-25T13:45:41.077 cleos     main.cpp:4121                 operator()           ] Failed with error: Too many bytes in flight: 897 (429)

[stephenpdeos]

The team believes there are valid use cases for high values like this, so we'll seek to continue support and get to the root cause of this failure.

[heifner]

Note any changes also need to be folded into #22 if needed.