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[PERF] Speed up integer type casting from DB
We don't have the check the range when the value is coming from the DB, so override type_cast_from_database to short-circuit the extra work. type_cast_from_database (small) 3437507.5 (±29.2%) i/s - 14223135 in 4.996973s type_cast_from_database (large) 3158588.7 (±28.3%) i/s - 13265628 in 4.992121s type_cast (small) 481984.8 (±14.2%) i/s - 2352012 in 5.005694s type_cast (large) 477331.8 (±14.2%) i/s - 2332824 in 5.012365s Comparison: type_cast_from_database (small): 3437507.5 i/s type_cast_from_database (large): 3158588.7 i/s - 1.09x slower type_cast (small): 481984.8 i/s - 7.13x slower type_cast (large): 477331.8 i/s - 7.20x slower The difference is huge but the absolute gain is quite small. That being said this is a hotspot and it showed up on the radar when benchmarking discourse.
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