[mvr] use mvr-mode on sui-mvr-graphql-rpc for in-crate tests

[wlmyng]

Description

Needed to adjust the ConnectionAsObjectStore, because objects will not be written to in mvr-mode. Querying objects and querying objects_history + objects_snapshot should both yield the live object set.

Test plan

How did you test the new or updated feature?

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Release notes

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• Protocol:
• Nodes (Validators and Full nodes):
• Indexer:
• JSON-RPC:
• GraphQL:
• CLI:
• Rust SDK:
• REST API:

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[gegaowp]

looks good!
and to double check, this will not affect JSON RPC's object related endpoints, right?

[wlmyng]

looks good! and to double check, this will not affect JSON RPC's object related endpoints, right?

It might affect IndexerReader's get_latest_sui_system_state and get_validator_from_table since it relies on ConnectionAsObjectStore, but I can revert the change on IndexerReader's get_object_from_db to minimize impact. But even then, reading from objects table should be the same as objects_history + objects_snapshot

[gegaowp]

yeah as this change is for mvr-mode only, would be good to minimize changes to other reading paths.