test: fix inconsistency write size in `test-fs-readfile-tostring-fail`
In this test, more space is being used than the space being checked.
It's actually using more capacity in stream.write()
than is written to kStringMaxLength
.
There are 201
buffers used in the for loop.
Even if this code is fixed, I'm not sure if the unstable tests are resolved. https://github.com/nodejs/node/blob/1b60054fffc0c67a711cdf3efbcc8f44afab0ce2/test/pummel/test-fs-readfile-tostring-fail.js#L18-L20 https://github.com/nodejs/node/blob/1b60054fffc0c67a711cdf3efbcc8f44afab0ce2/test/pummel/test-fs-readfile-tostring-fail.js#L29-L36
Refs: #51133 (closed)