fix watercooler sprite (Also adds solution visuals) (#16740)

Resources/Prototypes/Entities/Structures/Storage/Tanks/tanks.yml

@@ -58,7 +58,6 @@
       - state: highfueltank-2-1
         map: ["enum.SolutionContainerLayers.Fill"]
         visible: false
-  - type: Appearance
   - type: SolutionContainerVisuals
     maxFillLevels: 7
     fillBaseName: highfueltank-2-
@@ -114,7 +113,14 @@
   components:
   - type: Sprite
     sprite: Structures/Storage/tanks.rsi
-    state: watercooler
+    layers:
+      - state: watercooler-2
+      - state: watercooler-2-1
+        map: ["enum.SolutionContainerLayers.Fill"]
+        visible: false
+  - type: SolutionContainerVisuals
+    maxFillLevels: 4
+    fillBaseName: watercooler-2-
   - type: SolutionContainerManager
     solutions:
       tank:
@@ -147,5 +153,7 @@
           Quantity: 10000
         maxVol: 10000
 #   It's pressurized...
+  - type: ExaminableSolution
+    solution: tank
   - type: ReagentTank
     transferAmount: 100