Corrige l'ouverture/fermeture des nodes dans WaterfallPlainView

src/lib/components/WaterfallPlainView.svelte

@@ -26,7 +26,7 @@
   const dispatch = createEventDispatcher()
   let tab = $state("brut_to_disponible")
 
-  let decompositionByName = $state(
+  let decompositionByName = $derived(
     buildDecompositionByNameFromCore(
       billName === undefined
         ? decompositionCoreByName
@@ -41,7 +41,7 @@
     variableSummaryByNameByReformName[billName] ?? variableSummaryByName,
   )
 
-  let waterfallsDecompositions = $derived(
+  let waterfallsDecompositions = $state(
     waterfalls.map((waterfall) => ({
       waterfall,
       visibleDecompositions: buildVisibleDecompositionsWithoutValues(
@@ -68,10 +68,44 @@
 
   function zoomIn(decomposition: Decomposition) {
     decompositionByName[decomposition.name].open = true
+
+    waterfallsDecompositions = waterfalls.map((waterfall) => ({
+      waterfall,
+      visibleDecompositions: buildVisibleDecompositionsWithoutValues(
+        decompositionByName,
+        variableSummaryByName,
+        waterfall,
+        year,
+      ).filter(
+        ({ decomposition }) =>
+          billVariableSummaryByName[decomposition.name] !== undefined &&
+          !billVariableSummaryByName[decomposition.name].input &&
+          getVariableLatestFormulaDate(
+            billVariableSummaryByName[decomposition.name],
+          ) !== null,
+      ),
+    }))
   }
 
   function zoomOut(decomposition: Decomposition) {
     decompositionByName[decomposition.name].open = false
+
+    waterfallsDecompositions = waterfalls.map((waterfall) => ({
+      waterfall,
+      visibleDecompositions: buildVisibleDecompositionsWithoutValues(
+        decompositionByName,
+        variableSummaryByName,
+        waterfall,
+        year,
+      ).filter(
+        ({ decomposition }) =>
+          billVariableSummaryByName[decomposition.name] !== undefined &&
+          !billVariableSummaryByName[decomposition.name].input &&
+          getVariableLatestFormulaDate(
+            billVariableSummaryByName[decomposition.name],
+          ) !== null,
+      ),
+    }))
   }
 </script>