feat(precompile): triple the price of modexp

[Rjected]

This implements the following change:
ethereum/EIPs#9969

by changing the GAS_DIVISOR to 1 for osaka

[codspeed-hq]

CodSpeed Performance Report

Merging #2696 will degrade performances by 3.13%

_{Comparing Rjected:change-modexp-repricing (e1dc002) with main (08badc0)}

Summary

❌ 1 regressions
✅ 158 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	ecrecover precompile	195.2 µs	201.5 µs	-3.13%