Fix PHPStan warning on assertBreadcrumb when passing NULL

Thanks for opening the follow-up!

Looks like PHPStan baseline will need to be updated.

Not sure if we even need to consider this as an API change since in practice NULL value has been accepted. It seems like it's just a documentation change.

Looks like PHPStan baseline will need to be updated.

My bad here.

Not sure if we even need to consider this as an API change since in practice NULL value has been accepted. It seems like it's just a documentation change.

This actually makes sense, just updated the IS.

Moving back to NR.

Looks like a good cleanup task

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Just rerolled the MR, so moving back to RTBC.

Committed/pushed to 10.1.x, thanks!

Automatically closed - issue fixed for 2 weeks with no activity.