[enhancement]: socket progress events should be handled by translation system

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Contact Details

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### What should this feature add?

When we emit progress events during graph execution, they can have a message attached.

In the UI, we display that message. Currently, the messages are displayed as-is, without any means to be translated.

We can improve on this:
- Core nodes should use translation keys for progress event messages.
- The frontend should render the messages using the translation function.
- If the message is a valid translation key, any translation will be used. We will ensure that the core nodes' progress messages have an English translation.
- If they message is not a valid translation key (i.e. it is just "normal" English words), the translation function will fall back to outputting the message as is.

### Alternatives

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### Additional Content

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