Max long & short failures in fuzz testing

[dpaiton]

Fuzz testing is seeing the following errors:

• calculate_max_long
  • InsufficientLiquidity: Negative Interest
  • Initial guess in calculate_max_long is insolvent
  • target share reserves less than effective share reserves
• calculate_max_short
  • absolute_max_short is insolvent
  • arithmetic operation overflow

The fuzz pool is initialized to a known-good state (@slundqui is 80% certain it is good based on visual inspection of the parameters from himself, Jonny, & Alex and comparison against rust CI tests). Random bots make trades and call calc_max_long and calc_max_short at random times throughout.

[dpaiton]

possibly related: fuzz_calculate_max_short is failing with large differences in budget amount: https://github.com/delvtech/hyperdrive-rs/issues/121

This is happening rarely, but I believe that is because the test itself is rarely hitting the assert. I rewrote the test to always hit the assert and it fails much more often.