fix: make notify work when wiping all buffers with %bw

[folke]

Some Noice users like to do %bw to wipe all buffers (which they shouldn't do, but anyway). This leads to issues in Noice, Nui and Notify.

I've just fixed them all in each project.

Fixes:

• [ ] https://github.com/folke/noice.nvim/issues/292
• [x] https://github.com/folke/noice.nvim/issues/95
• [ ] https://github.com/folke/noice.nvim/issues/244

[rcarriga]

Oh yeah that's really not ideal but at least it's a simple fix :sweat_smile: Thanks for the PR!