Cut blobs from local proposals post Nethermind's next release

[OisinKyne]

🎯 Problem to be solved

NethermindEth/nethermind#7502
NethermindEth/nethermind#9686

We want to use this feature in CDVN and LCDVN when it ships. This tracking issue is a reminder.

👐 Additional acceptance criteria

❌ Out of Scope