Fix water sankey calculation to include total supply from sources (#28191)

src/panels/lovelace/cards/water/hui-water-sankey-card.ts

@@ -98,17 +98,32 @@ class HuiWaterSankeyCard
     const nodes: Node[] = [];
     const links: Link[] = [];
 
-    // Calculate total water consumption from all devices
-    let totalWaterConsumption = 0;
-    prefs.device_consumption_water.forEach((device) => {
+    // Calculate total water consumption from all sources or devices
+    const totalDownstreamConsumption = prefs.device_consumption_water.reduce(
+      (total, device) => {
         const value =
           device.stat_consumption in this._data!.stats
             ? calculateStatisticSumGrowth(
                 this._data!.stats[device.stat_consumption]
               ) || 0
             : 0;
-      totalWaterConsumption += value;
-    });
+        return total + value;
+      },
+      0
+    );
+    const totalSourceSupply = waterSources.reduce((total, source) => {
+      const value =
+        source.stat_energy_from in this._data!.stats
+          ? calculateStatisticSumGrowth(
+              this._data!.stats[source.stat_energy_from]
+            ) || 0
+          : 0;
+      return total + value;
+    }, 0);
+    const totalWaterConsumption = Math.max(
+      totalDownstreamConsumption,
+      totalSourceSupply
+    );
 
     // Create home/consumption node
     const homeNode: Node = {