Desktop: Beta CM6 editor can only load one contentScript per plugin

[personalizedrefrigerator]

Operating system

Linux

Joplin version

2.14.13

Desktop version info

Joplin 2.14.14 (dev, linux)

Client ID: f8fb7827ea044dec97a0f54297f20550 Sync Version: 3 Profile Version: 46 Keychain Supported: No

Revision: eb440c376 (pr/fix-cm6-loading-multiple-plugins)

Simple Backup: 1.3.5

Current behaviour

1. Create a plugin that registers multiple content scripts
2. Add the plugin to Joplin
3. Enable the CodeMirror 6 beta editor
4. Observe that only the first of the content scripts is loaded

Expected behaviour

All content scripts should be loaded.

Logs

No response