Generalize expiry based de-duplication

[aaronbuchwald]

The validity window is currently used to de-duplicate transactions for expiry based replay protection in the chain package: https://github.com/ava-labs/hypersdk/blob/main/chain/validity_window.go#L34.

This ticket is to create a general purpose version of it that can be re-used for chunk de-duplication and replay protection within the DSMR package.

This should replace the existing validity window: https://github.com/ava-labs/hypersdk/blob/main/chain/validity_window.go#L20 with an implementation that handles arbitrary containers ie. block of txs or chunks.

[aaronbuchwald]

We should integrate de-duplication into chunk based block building and block execution.

Modify the DSMR node block building function signature to the DSMR equivalent of https://github.com/ava-labs/hypersdk/blob/35fc59b6d39e94760064f0438f989158c2ca4c56/chain/builder.go#L99C1-L99C97 and utilize general purpose validity window to skip any duplicate chunks gathered from the mempool: https://github.com/ava-labs/hypersdk/blob/main/chain/builder.go#L175. We should apply the same check over chunk certificates to potentially include within a block here: https://github.com/ava-labs/hypersdk/blob/main/x/dsmr/node.go#L183.

Additionally, we should verify there are no duplicates included internal to the block or in its ancestry when executing (verifying) a block: https://github.com/ava-labs/hypersdk/pull/1800/files#r1848400598.