IO-3015 add additional indexs.

hasura/migrations/1730521661838_run_sql_migration/down.sql

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+-- Could not auto-generate a down migration.
+-- Please write an appropriate down migration for the SQL below:
+-- CREATE index  idx_messages_unread_agg ON messages (read, isoutbound)
+-- WHERE read = false AND isoutbound = false;

hasura/migrations/1730521661838_run_sql_migration/up.sql

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+CREATE index  idx_messages_unread_agg ON messages (read, isoutbound)
+WHERE read = false AND isoutbound = false;