Exception rather than clear message on unknown build profile

[kanej]

If the user runs a task with an unknown build profile, we get a typeerror:

npx hardhat compile --build-profile nonexistant

Compiling your Solidity contracts
An unexpected error occurred:

TypeError: Cannot read properties of undefined (reading 'overrides')
# ... lots more lines of stack trace ...
If you think this is a bug in Hardhat, please report it here: https://hardhat.org/report-bug

We should report a specific named error instead, it should not be reported to Sentry. For reference here is what happens when network does not exist:

npx hardhat run ./scripts/send-op-tx.ts --network nonexistant               
Compiling your Solidity contracts
Compiled 3 Solidity files with solc 0.8.24 (evm target: shanghai)

Error HHE705: The network nonexistant is not defined in your networks config.

For more info go to https://hardhat.org/HHE705 or run Hardhat with --show-stack-traces