Fix `ChainPosition` ordering#2074

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evanlinjin wants to merge 2 commits intobitcoindevkit:masterfrom

evanlinjin:fix/better-chain-position-ord

Commits on Jan 5, 2026

fix(chain): correct ChainPosition ordering for wallet transaction display
evanlinjin
committed
refactor(chain): Simplify `ChainPosition` `Ord` logic
evanlinjin
committed