fix(did): revoke issuers on deactivation

[modelsbridgeaicom-ship-it]

Summary

• remove a DID from every service issuer list when UpdateDidStatus deactivates it
• keep reactivation from silently restoring prior issuer memberships without explicit re-authorization
• remove duplicate issuer entries as part of the revocation pass
• add a message-server regression test with a fake GlobalDao keeper

Fixes #267.

Tests

• ..\..\tools\go\bin\go.exe test .\x\did\keeper -run TestUpdateDidStatusInactiveRevokesServiceIssuerMemberships -count=1 -v
• ..\..\tools\go\bin\go.exe test .\x\did\keeper -count=1
• git diff --check
• git diff --cached --check

..\..\tools\go\bin\go.exe test .\x\did -count=1 is currently blocked by the existing x/did/genesis_test.go fixture, which panics in InitGenesis with empty address string is not allowed.