Minor improvements, added missing Paxel blocks

Short Description

Just made some small changes and added missing Paxel blocks

Mostly added ignoreCancelled = true for handlers that only cancel the event, as well as made some other small improvements where I saw them fit.

None

[x] I have fully tested the proposed changes and promise that they will not break everything into chaos.
[x] I have tested every variant of every item or config setting that I have added.
[x] I have also tested the proposed changes in combination with base Slimefun and made sure nothing breaks/unexpected happens.
[x] I followed the existing code standards and didn't mess up the formatting.
[x] I did my best to add documentation to any public classes or methods I added which may not be obvious to maintainers.
[x] I have added Nonnull and Nullable annotations to my methods to indicate their behaviour for null values