[1.15.x] func_215696_m causesSuffocation -> isViewBlocking

[Cadiboo]

• func_215696_m in net.minecraft.block.BlockState: causesSuffocation -> isViewBlocking

There is now another method (func_229980_m_) that does the suffocation check, this method is now exclusively used from OverlayRenderer#getOverlayBlock and now only exists on the client. It now forwards to the new method (func_229980_m_) that does the suffocation check via its object to Block#isViewBlocking (func_229870_f_).