fix(calendar-grid): change key used in week days mapping

change the key used to be the week day character plus the index to avoid warnings when diferents
days have the semana character for identification

fix #2041

packages/shoreline/src/components/calendar/calendar-grid.tsx

@@ -24,8 +24,8 @@ export function CalendarGrid(props: CalendarGridProps) {
     <table data-sl-calendar-grid {...gridProps}>
       <thead data-sl-calendar-grid-header {...headerProps}>
         <tr>
-          {weekDays.map((day) => (
-            <th key={day}>{day}</th>
+          {weekDays.map((day, index) => (
+            <th key={`${day}=${index}`}>{day}</th>
           ))}
         </tr>
       </thead>