fix(op-node/p2p): gossip publisher does not close blocksV3/blocksV4 on shutdown

## Problem

The `publisher` type holds four block gossip topics (`blocksV1`–`blocksV4`), but `Close()` only shut down V1 and V2. V3/V4 resources may leak on node shutdown.

## Expected

`Close()` should close all four topics and join any returned errors (same pattern as V1/V2).

## PR

Will be addressed by the linked pull request.

Start at the op-node/p2p publisher type and its Close() method, then compare the existing blocksV1/blocksV2 shutdown and error-joining pattern. Done means blocksV3 and blocksV4 are also closed and any returned errors are joined consistently with V1/V2.

Written by the indexing model from the issue text.