Currently, anonymous/shadow users go through the same permission checks
for chat as normal users do. This means that if a site has chat enabled
for all users, anonymous users also get access to chat. This may be
undesirable for some communities, so we're adding a new site setting
`allow_chat_in_anonymous_mode` to block access to chat for anonymous
users.
Internal topic: t/148088.
* FIX: Remove chat default channel being applied to mobile chat and drawer
* DEV: removing chat_default_channel_id setting
* DEV: add migration to remove chat default channel id
* DEV: remove default_channel_validator and tests
This commit main goal was to comply with Zeitwerk and properly rely on autoloading. To achieve this, most resources have been namespaced under the `Chat` module.
- Given all models are now namespaced with `Chat::` and would change the stored types in DB when using polymorphism or STI (single table inheritance), this commit uses various Rails methods to ensure proper class is loaded and the stored name in DB is unchanged, eg: `Chat::Message` model will be stored as `"ChatMessage"`, and `"ChatMessage"` will correctly load `Chat::Message` model.
- Jobs are now using constants only, eg: `Jobs::Chat::Foo` and should only be enqueued this way
Notes:
- This commit also used this opportunity to limit the number of registered css files in plugin.rb
- `discourse_dev` support has been removed within this commit and will be reintroduced later
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