buffer: throw when filling with empty buffers

Prior to this commit, Node would enter an infinite loop when
attempting to fill a non-zero length buffer with a zero length
buffer. This commit introduces a thrown exception in this scenario.

PR-URL: https://github.com/nodejs/node/pull/18129
Fixes: https://github.com/nodejs/node/issues/18128


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>