Fix mods on Ring 3 applying when The Unseen Hand isn't allocated (#9730)

* remove ring 3 when deallocating Unseen Hand

* refactor to CalcSetup, fix tooltip

* Change to flag check

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Co-authored-by: LocalIdentity <localidentity2@gmail.com>

Author: Peechey

src/Modules/CalcSetup.lua

@@ -687,6 +687,10 @@ function calcs.initEnv(build, mode, override, specEnv)
 					goto continue
 				end
 			end
+			-- ignore item in Ring 3 if The Unseen Hand is not allocated
+			if slotName == "Ring 3" and not env.initialNodeModDB:Flag(nil, "AdditionalRingSlot") then
+				goto continue
+			end
 			local item
 			if slotName == override.repSlotName then
 				item = override.repItem