[MC-80959] execute detect air at Y coordinates > 256 and

When running any of these commands, you see a message in the chat, meaning the block detection is successful.

/execute @a ~ ~ ~ detect ~ 500 ~ air 0 say a
/execute @a ~ ~ ~ detect ~ -1 ~ air 0 say b
/execute @a ~ ~ ~ detect ~ ~300 ~ air 0 say c

But since the detection is made outside of the world it should not confirm the detection and not execute the say command. Others commands like testforblock, blockdata just return an error message :

/testforblock ~ 300 ~ air
=>The number you have entered (300.0) is too big, it must be at most 256

/testforblock ~ -1 ~ air
=>The number you have entered (-1.0) is too small, it must be at least 0

execute detect air at Y coordinates > 256 and < 0