fs: change default mode to COPYFILE_FICLONE #47951
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Change default value of mode to
COPYFILE_FICLONE
infs.copyFile
andfs.copyFileSync
.If copy-on-write is not supported, fallback copy mechanism
will be used.
Fixes: #47861
I am aware that the discussion is still very nascent. If we are not going to do this or if we are going in different direction, feel free to close this PR.
TODO: