Raspberry Pi 4 snap fit case top with 30mm fan and Home Assistant logo HA_TOP submesh errors fixed.

Downloaded this case had two filed top and bottom from @ https://www.thingiverse.com/thing:3922751 however the Raspberry_Pi_4_30mm_Fan_Case_HA_TOP.stl had error in Cura it wouldn't slice as it wasn't water tight.

I eventually worked out how to fix it so if you want it download it I have included the TOP and BOTTOM files the latter without the HA logo sliced fine, the fixed file is quite a bit larger but if you download the Cura plug in Mesh Tools and check this version you'll see it's fixed.