fix: bodyReader works with gunzip and maxBodySize

[jfilipczyk]

Pre-Submission Checklist

• [X] Opened an issue discussing these changes before opening the PR
• [X] Ran the linter and tests via make prepush
• [X] Included comprehensive and convincing tests for changes

Issues

Closes:

• https://github.com/restify/node-restify/issues/1785

Changes

Adds error handling for Gunzip errors so node process does not die. Fixes handling "413 Payload Too Large" for gzip encoded content.

[sergburn]

Dear maintainers, please review this and approve! It's a pity that Restify may be crashed just by setting Content-Encoding: gzip and POST-ing plain text body.

One workaround is server.on('uncaughtException', but it's bad and deprecated.