fix: future end block causes error

[kyscott18]

Description

Ponder allows for passing an end block that is greater than the current chain head. However, when this happens the end block is incorrectly requested. Requesting a block in the futures causes a "not found" error.

ponder/packages/core/src/sync/index.ts

Lines 936 to 943 in afba4c3

	const [remoteChainId, startBlock, endBlock, latestBlock] = await Promise.all([
	requestQueue.request({ method: "eth_chainId" }),
	_eth_getBlockByNumber(requestQueue, { blockNumber: start }),
	end === undefined
	? undefined
	: _eth_getBlockByNumber(requestQueue, { blockNumber: end }),
	_eth_getBlockByNumber(requestQueue, { blockTag: "latest" }),
	]);

Solving this will require an update to the checkpointing logic (getChainCheckpoint + getOmnichainCheckpoint)