fix(sonarr): monitor existing series upon request approval (#2553)

server/api/servarr/sonarr.ts

@@ -149,6 +149,7 @@ class SonarrAPI extends ServarrBase<{ seriesId: number; episodeId: number }> {
 
       // If the series already exists, we will simply just update it
       if (series.id) {
+        series.monitored = options.monitored ?? series.monitored;
         series.tags = options.tags ?? series.tags;
         series.seasons = this.buildSeasonList(options.seasons, series.seasons);