fix: mark bad macros arguments count error as downstream

[cletter7]

Logs before:

statusSource=plugin error="Could not apply macros: unexpected number of arguments: expected 1 argument, received 2"

Logs after:

statusSource=downstream error="Could not apply macros: downstream error: unexpected number of arguments: expected 1 argument, received 2"

[CLAassistant]

All committers have signed the CLA.