Track user-selected results for ranking purposes

Added logic to record user-selected results in `_userSelectedRecord`
before executing both synchronous and asynchronous actions. This
enables tracking of user interactions for result ranking or analytics.
Comments were added to clarify the purpose of the new logic.

Author: Jack251970

Flow.Launcher/ViewModel/MainViewModel.cs

@@ -1357,12 +1357,18 @@ private List<Result> GetHistoryItems(IEnumerable<LastOpenedHistoryItem> historyI
                             {
                                 if (reflectResult.Action != null)
                                 {
+                                    // Record the user selected record for result ranking
+                                    _userSelectedRecord.Add(reflectResult);
+
                                     // Since some actions may need to hide the Flow window to execute
                                     // So let us populate the results of them
                                     return reflectResult.Action(c);
                                 }
                                 if (reflectResult.AsyncAction != null)
                                 {
+                                    // Record the user selected record for result ranking
+                                    _userSelectedRecord.Add(reflectResult);
+
                                     // Since some actions may need to hide the Flow window to execute
                                     // So let us populate the results of them
                                     return await reflectResult.AsyncAction(c);