fix: pow operation in both rust and ts

[yanCode]

Problem

In rust and typescript/js, ^ is a bitwise operation of XOR, not exponentiation as intended. to correctly represents 10 tokens with 6 decimal places of percision, this fix has to be made, otherwise 10 * 10 ^ 6 would result in 98 in binary computation. not the expected 10 * 1_000_000, this might be misleading.

Summary of Changes

To fix 10 * 10 ^6:
in typescript the change is 10 * 10 ** 6,
while in rust it becomes 10 * 10u64.pow(6).

Fixes #