Incorrect wrapping of fallback messages for unsupported message types

[mini-bomba]

Describe the bug

If the fallback message for unsupported message events is too long, "Unsupported message" and the fallback message are wrapped independently of each other, when you'd expect them to be one single text block

Reproduction

1. send a message that is not supported by sable, with a long fallback body
   • key verification requests from element seem to fit the requirements, as they have quite a verbose fallback message
   • if the fallback message is not long enough, try reducing the width of the sable window until it wraps?
2. o b s e r v e

Expected behavior

(edited via devtools)

Platform and versions

sable v1.15.2 (1c46081)

Additional context

No response