disable fill on quantum fluid slot (it felt weird to me)

prevent redundant locking
use our copy method

Author: ghzdude

src/main/java/gregtech/common/metatileentities/storage/MetaTileEntityQuantumTank.java

@@ -323,6 +323,7 @@ protected void createWidgets(ModularPanel mainPanel, PanelSyncManager syncManage
                 .child(new GTFluidSlot()
                         .background(IDrawable.NONE)
                         .syncHandler(fluidSyncHandler
+                                .accessibility(true, false)
                                 .handleLocking(() -> lockedFluid, fluidStack -> {
                                     setLocked(fluidStack != null);
                                     lockedFluid = fluidStack;
@@ -463,10 +464,10 @@ public boolean onScrewdriverClick(EntityPlayer playerIn, EnumHand hand, EnumFaci
 
     @Override
     protected void setLocked(boolean locked) {
+        if (locked == this.isLocked()) return;
         super.setLocked(locked);
         if (locked && fluidTank.getFluid() != null) {
-            this.lockedFluid = fluidTank.getFluid().copy();
-            this.lockedFluid.amount = 1;
+            this.lockedFluid = GTUtility.copy(1, fluidTank.getFluid());
         } else this.lockedFluid = null;
     }