Add cross language tests for ChaCha20/Poly1305 and XChaCha20/Poly1305.
Add cross language tests for ChaCha20/Poly1305 and XChaCha20/Poly1305.

PiperOrigin-RevId: 271539033

google/tink,google/tink,google/tink,google/tink,google/tink,google/tink,google/tink,google/tink