Enable `-sha256` feature to some Soong built zip files

Enable the new soong_zip feature to general-tests.zip,
host-unit-tests.zip, android-cts.zip, android-mts.zip etc. This is a
following change of https://r.android.com/2395452. With `-sha256` flag,
file header of generated zip files contains SHA256 checksum for each
file, which can then be used by downstream systems.

Bug: 259513199
Test: run `m dist host-unit-tests general-tests cts mts` and check zip
    files under `out/dist/`
Change-Id: I726b5261d177beadcd8f707e2cd2cb5cdef20273