[libc] add missing headers in stdfix (#162078)

Fixes https://github.com/llvm/llvm-project/issues/129361

@michaelrj-google @PiJoules

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Signed-off-by: Shreeyash Pandey <shreeyash335@gmail.com>
Co-authored-by: Michael Jones <michaelrj@google.com>
GitOrigin-RevId: a1dc546f7f2130b2a9b8c29f24ee57ad9002f5a3
68 files changed