fix: importer using simulated extractions to insert

The behavior is now consistent with items.
This caused issues with Gregtech, they returned fluids that weren't extractable in simulation mode so RS ended up duping them.
Now we only insert fluids that return from execution mode.

Fixes #3570

(cherry picked from commit 1522971)

src/main/java/com/refinedmods/refinedstorage/apiimpl/network/node/ImporterNetworkNode.java

@@ -103,20 +103,15 @@ public void update() {
             IFluidHandler handler = LevelUtils.getFluidHandler(getFacingBlockEntity(), getDirection().getOpposite());
 
             if (handler != null) {
-                FluidStack stack = handler.drain(FluidType.BUCKET_VOLUME, IFluidHandler.FluidAction.SIMULATE);
+                FluidStack extractedSimulated = handler.drain(FluidType.BUCKET_VOLUME * upgrades.getStackInteractCount(), IFluidHandler.FluidAction.SIMULATE);
 
-                if (!stack.isEmpty() &&
-                    IWhitelistBlacklist.acceptsFluid(fluidFilters, mode, compare, stack) &&
-                    network.insertFluid(stack, stack.getAmount(), Action.SIMULATE).isEmpty()) {
-                    FluidStack toDrain = handler.drain(FluidType.BUCKET_VOLUME * upgrades.getStackInteractCount(), IFluidHandler.FluidAction.SIMULATE);
+                if (!extractedSimulated.isEmpty()
+                        && IWhitelistBlacklist.acceptsFluid(fluidFilters, mode, compare, extractedSimulated)
+                        && network.insertFluid(extractedSimulated, extractedSimulated.getAmount(), Action.SIMULATE).isEmpty()) {
+                    FluidStack extracted = handler.drain(extractedSimulated, IFluidHandler.FluidAction.EXECUTE);
 
-                    if (!toDrain.isEmpty()) {
-                        FluidStack remainder = network.insertFluidTracked(toDrain, toDrain.getAmount());
-                        if (!remainder.isEmpty()) {
-                            toDrain.shrink(remainder.getAmount());
-                        }
-
-                        handler.drain(toDrain, IFluidHandler.FluidAction.EXECUTE);
+                    if (!extracted.isEmpty()) {
+                        network.insertFluidTracked(extracted, extracted.getAmount());
                     }
                 }
             }