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Issue description:

Connecting a mechanical pipe to an AE2 fluid interface causes an issue that causes the world to not load and crash on startup

Steps to reproduce:

1. Place AE2 fluid interface block
2. Place mechanical pipe next to the interface block
3. Expect game to immediatelly crash and the world is now unable to load

Version (make sure you are on the latest version before reporting):

Forge: 1.15.2-31.2.23
Mekanism: 1.15.2-9.10.9.422
Other relevant version:

If a (crash)log is relevant for this issue, link it here: (It's almost always relevant)

https://pastebin.com/wMvtDVLd

[gist / pastebin / etc link here. Please make sure that it isn't set to expire.]

Nothing we can do about this AE2 is returning null for a capability https://github.com/AppliedEnergistics/Applied-Energistics-2/blob/master/src/main/java/appeng/fluids/helper/DualityFluidInterface.java#L213 when they should be returning an empty lazy optional instead. getCapability is nonnull in 1.14+