params: Set Mainnet Kaia and KIP160 fork block number

[blukat29]

Proposed changes

• Mainnet
  • Kaia block number: 162900480 est. 2024-08-29 10:29 UTC+9
  • Kip160 block number: same as above

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Further comments

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[yoomee1313]

It would be good to update the tbu at the PR description.