invalid constant serialized in openfhe emitter

[j2kun]

Google-internal build system (I think ASAN) detected a bug:

heir/tests/Examples/openfhe/bfv/dot_product_8/dot_product_8_lib.h:73:26: error: implicit conversion from 'long' to 'usint' (aka 'unsigned int') changes value from 7595718147998050665 to 1768515945 [-Werror,-Wconstant-conversion]
   73 |   params.SetEvalAddCount(7595718147998050665);
      |          ~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~~~
heir/tests/Examples/openfhe/bfv/dot_product_8/dot_product_8_lib.h:74:28: error: implicit conversion from 'long' to 'usint' (aka 'unsigned int') changes value from 7595718147998050665 to 1768515945 [-Werror,-Wconstant-conversion]
   74 |   params.SetKeySwitchCount(7595718147998050665);

7595718147998050665 is the poison value malloc uses for a use-after-free detection.

[asraa]

I found that happening in a recent pr for key evaluation technique - i think it was unitialized in this code when you get the config from the module

heir/lib/Dialect/Openfhe/Transforms/ConfigureCryptoContext.cpp

Line 237 in 356fc8d

config.encryptionTechniqueExtended = false;