Choose waterfall according to selected parameter firstly

src/lib/components/impacts_view/test_cases_view/test_case_selected/TestCaseView.svelte

@@ -101,6 +101,7 @@
             class:shadow-none={name === shared.waterfall.name}
             href={newSimulationUrl({
               ...displayMode,
+              parametersVariableName: undefined,
               waterfallName: name,
             })}
             data-sveltekit-noscroll

src/lib/urls.ts

-import { waterfalls } from "$lib/decompositions"
+import { isChildOrDescendant, waterfalls } from "$lib/decompositions"
 import type { DisplayMode } from "$lib/displays"
+import { shared } from "./shared.svelte"
 
 export interface SelfTargetAProps {
   href: string
@@ -7,9 +8,7 @@ export interface SelfTargetAProps {
 }
 
 export function newSelfTargetAProps(url: string): SelfTargetAProps {
-  return {
-    href: url,
-  }
+  return { href: url }
 }
 
 export function newSimulationUrl(displayMode: DisplayMode): string {
@@ -36,9 +35,24 @@ export function newSimulationUrl(displayMode: DisplayMode): string {
   }
   if (displayMode.parametersVariableName !== undefined) {
     parametersQuery.append("parameters", displayMode.parametersVariableName)
+
+    let waterfallForSelectedParameter = waterfalls.filter((waterfall) => {
+      return isChildOrDescendant(
+        shared.decompositionByName,
+        displayMode.parametersVariableName!,
+        waterfall.root,
+      )
+    })[0]
+
+    if (waterfallForSelectedParameter === undefined) {
+      waterfallForSelectedParameter = waterfalls[0]
+    }
+
+    parametersQuery.append("waterfall", waterfallForSelectedParameter.name)
   }
   if (
     displayMode.waterfallName !== undefined &&
+    displayMode.parametersVariableName === undefined &&
     displayMode.waterfallName !== waterfalls[0].name
   ) {
     parametersQuery.append("waterfall", displayMode.waterfallName)