Fix wrong JSON.stringify for budget demand

src/routes/+layout.svelte

@@ -787,14 +787,12 @@
     }
     const variableName = budgetVariableNameByVariableName[budgetVariableName]
     const variableConfig: BudgetVariable = budgetVariablesConfig[variableName]
-    const simulationBody = JSON.stringify(
-      buildBudgetDemandBody(
+    const simulationBody = buildBudgetDemandBody(
       variableName,
       variableConfig.outputVariables,
       variableConfig.quantileBaseVariable,
       variableConfig.quantileCompareVariables,
       false,
-      ),
     )
     const urlString = "/budgets/demands"
     const res = await fetch(urlString, {
@@ -818,6 +816,16 @@
       },
       method: "POST",
     })
+    console.log({
+      displayMode: $displayMode,
+      email: $requestedSimulationEmail,
+      request: Object.fromEntries(
+        Object.entries($parametricReform).filter(([parameterName]) =>
+          budgetEditableParametersName.has(parameterName),
+        ),
+      ),
+      simulation: simulationBody,
+    })
     if (!res.ok) {
       $requestedSimulationEmail = undefined
       console.error(