Make a Runtime Database Config to explicitly track if a database is suspended

Currently, dbConfigs contains a map of databases with their associated persisted database config that is in the bucket. This can be changed to instead contain a runtime database config with the persisted database config embedded.

This runtime database config can contain the explicit flag of if the database is suspended or not, then the appropriate places can be changed to set and read this (e.g. isDatabaseSuspended function, unsuspendDatabase).

isDatabaseSuspended may also need to be called in more places such as unsuspendDatabase.