Broadcast Eval bug

[PyroTechniac]

Describe the issue

In onceReady.js, the schedule is initialized before pieces, which means the coreSettings pieces are not disabled if sharding isn't used.
On rare occasions, the schedule will need to update a recurring task that missed it's time. This causes a db update, which attempts to update across shards thanks to the coreSettings events, which throws

Cannot read property 'broadcastEval' of null

Code or steps to reproduce

Expected and actual behavior

Further details

• discord.js version: v12.0.0
• node.js version: v10-v12
• Klasa version: latest commit of settings
• I have modified core files.
• I have tested the issue on latest master. Commit hash: