`kcl fmt` adds 2 empty lines at EOF, which confuses `git diff --check`

[sanmai-NL]

Enhancement

Only format files to have a single final empty line.

$ git diff --check @{upstream}
.gitlab-ci/gitlabci/common/architecture.k:6: new blank line at EOF.

[liangyuanpeng]

Have not reproduce it on v0.11.1, could you provide the reproducer here?

[legal90]

@liangyuanpeng The issue could be reproduced when the KCL file ends with schema block:

foo = "bar"

schema Name:
    first: str

And it does not happen if the file ends with a variable definition:

schema Name:
    first: str

foo = "bar"