fix: await the promise to be able to catch its error and a toast

[bpingris]

Summary

hello! this PR fixes the toast.promise method with a rejected promise where it is never catch as the promise was not awaited
this resulted in the toast staying in the loading state forever

Test plan

yarn example start and test the two buttons:

• Toast with a successful promise
• Toast with a failed promise

[gunnartorfis]

Thanks for the PR and well spotted @bpingris 👏

[gunnartorfis]

@bpingris I noticed that multiple toasts are shown once the promise is resolved/rejected. I'll have to revert this PR for now but would be great if you could take a look at it. Is that not happening on your end?

Screen.Recording.2024-09-14.at.09.03.57.mov

[bpingris]

oh yes you're right!
I think I saw it even before starting to implement the promise fix, it seems to be because of the configuration of the <Toaster> in the example app.
while I was trying the PR I saw the issue and just removed every option and I kept it as <Toaster /> without any extra prop

I will still check again that this not related to my PR!

[gunnartorfis]

Oh!! You're right, I was too quick on my feet here - it is not related to your PR. I'll revert the reversion 😆