Restore vault name resolution in account identity (supplier list)

[starksama]

Summary

Vault addresses are no longer resolving to vault names in account identity displays (e.g. supplier list).

Expected

When an address belongs to a Morpho vault, show the vault name tag/label instead of raw address where account identity is rendered.

Investigation notes

• We previously had a hook/query (e.g. useMorphoVaults) for vault metadata.
• Verify whether the query still exists and is still valid.
• If removed/broken, restore or replace with the current valid source.

Acceptance

• Vault name tag is shown again in relevant account identity surfaces (including suppliers list).
• No regressions in address identity rendering.