It's normal... It's called casting flash...
In the pics you've shown it is perhaps a little more than average,
But nothing to be really concerned about.
That is it'd meet manufacturers specs.

Point of interest,
In race engines, time is spent removing this sort of rubbish left over from manufacture,
The aim is to improve oil drain / oil return.
You should be happy you've got a Honda, other manufacturer engines are generally worse in this regard.