JavaScript uses 0-11 for month. (#13063)

Fix issue with timeseries in scatterplot.
![image](https://github.com/user-attachments/assets/3f1a5bdb-d191-49b4-8574-2170793aa95d)

Author: jdunkerley

app/gui/src/project-view/components/visualizations/ScatterplotVisualization.vue

@@ -148,7 +148,7 @@ const SHAPE_TO_SYMBOL: Record<string, d3.SymbolType> = {
 const createDateTime = (x: DateObj) => {
   const dateTime = new Date()
   if (x.day != null) dateTime.setDate(x.day)
-  if (x.month != null) dateTime.setMonth(x.month)
+  if (x.month != null) dateTime.setMonth(x.month - 1)
   if (x.year != null) dateTime.setFullYear(x.year)
   if (x.hour != null) dateTime.setHours(x.hour)
   if (x.minute != null) dateTime.setMinutes(x.minute)