feat: allow update market proposal submission with only ELS

[jeremyletang]

close #8635

[EVODelavega]

This change concerns me a bit, as it seems to go against one of the AC's, specifically 0028-GOVE-072 (https://github.com/vegaprotocol/specs/blob/cosmicelevator/protocol/0028-GOVE-governance.md#0028-GOVE-072):

A market change that's to modify any parameters on a market in pending state (i.e. voting has successfully completed on the market creation and the market is in the opening auction) will run voting rules the same as market creation proposals i.e. LPs don't get a vote.

[jeremyletang]

This change concerns me a bit, as it seems to go against one of the AC's, specifically 0028-GOVE-072 (https://github.com/vegaprotocol/specs/blob/cosmicelevator/protocol/0028-GOVE-governance.md#0028-GOVE-072):

A market change that's to modify any parameters on a market in pending state (i.e. voting has successfully completed on the market creation and the market is in the opening auction) will run voting rules the same as market creation proposals i.e. LPs don't get a vote.

Yea the ACs might needs updating, but the PR is to implements the changes required here: vegaprotocol/specs#1768