DYN-9093 Update default backup interval to 5 minutes (#16358)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: zeusongit

src/DynamoCore/Configuration/PreferenceSettings.cs

@@ -88,9 +88,14 @@ private readonly static Lazy<PreferenceSettings>
         internal const int DefaultMaxNumRecentFiles = 10;
 
         /// <summary>
-        /// The default time interval between backup files. 1 minute.
+        /// The default time interval between backup files. 5 minutes.
         /// </summary>
-        internal const int DefaultBackupInterval = 60000;
+        internal const int DefaultBackupInterval = 300000;
+
+        /// <summary>
+        /// The old time interval between backup files. 1 minute.
+        /// </summary>
+        private const int OldDefaultBackupInterval = 60000;
 
         /// <summary>
         /// Indicates the default render precision, i.e. the maximum number of tessellation divisions
@@ -1110,6 +1115,13 @@ public static PreferenceSettings Load(string filePath)
                         }
                     }
 
+                    // If the backup interval is set to OldDefaultBackupInterval (60000ms - 1 minute), reset it to the new default value.
+                    var savedBackUpInterval = settings?.BackupInterval;
+                    if (savedBackUpInterval == OldDefaultBackupInterval)
+                    {
+                        settings.BackupInterval = DefaultBackupInterval;
+                    }
+
                     fs.Close(); // Release file lock
                 }
             }