CDRIVER-4654 Fix missing aligned_alloc() on Android (#1286)

* CDRIVER-4654 Fix missing aligned_alloc() on Android

* chore: fix coding style

Co-authored-by: Ezra Chung <88335979+eramongodb@users.noreply.github.com>

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Co-authored-by: Jean-Marc Le Roux <jmlx@Enterprise-C>
Co-authored-by: Ezra Chung <88335979+eramongodb@users.noreply.github.com>