[Bug]: snapshot restoration don't restart if cometbft pick a different snapshot

[yihuang]

Summary of Bug

11:27AM ERR Timed out waiting for snapshot chunks, rejected snapshot format=2 hash="�c$\td�7\"F��%�\fF��\x0f8q�\x05�C\x18W=\x04�U\x06�" height=12340000 module=statesync
11:27AM INF VerifyHeader hash=E07127384E22643A06CBCF1E7317503FED7ADD17033ABCE72C46F0C235D3ABB1 height=12341001 module=light
11:27AM INF VerifyHeader hash=FE89EB79B37CD746967113B1EEA4F8DB4BD088AB73B81508DC9A3A1D985D685C height=12341002 module=light
11:27AM INF Offering snapshot to ABCI app format=2 hash="r��Ɇ\x1e�\a�ϥ_�����ku\x00��\vX��\x15+u&s�" height=12341000 module=statesync
11:27AM ERR failed to restore snapshot err="a restore operation is in progress: conflict" format=2 height=12341000
11:27AM ERR State sync failed err="state sync aborted" module=statesync

During state sync, when cometbft timeout downloading a snapshot, it rejects the snapshot and pick a different one automatically, but sdk will complain a restore operation is in progress:, and can't proceed.

Version

all versions I believe.

Steps to Reproduce

do state sync in slow network.

Proposal

We should automatically reset the old restoration when a new snapshot is offered.

[alexanderbez]

Thanks @yihuang!