Decimals shadowing warning in contracts

[tkporter]

Seeing this when building the monorepo, probably worth fixing:

➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Generating typings for: 8 artifacts in dir: ./src/types for target: ethers-v5
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Successfully generated 80 typings!
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Compiled 8 Solidity files successfully
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Solidity 0.8.16 is not fully supported yet. You can still use Hardhat, but some features, like stack traces, might not work correctly.
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Learn more at https://hardhat.org/reference/solidity-support
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Warning: This declaration shadows an existing declaration.
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:   --> contracts/HypERC20.sol:16:17:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:    |
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: 16 |     constructor(uint8 decimals) {
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:    |                 ^^^^^^^^^^^^^^
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Note: The shadowed declaration is here:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:   --> contracts/HypERC20.sol:46:5:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:    |
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: 46 |     function decimals() public view override returns (uint8) {
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:    |     ^ (Relevant source part starts here and spans across multiple lines).
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]:
➤ YN0000: [@hyperlane-xyz/hyperlane-token]: Process exited (exit code 0), completed in 13s 613ms

[tkporter]

cc @yorhodes

[yorhodes]

woops