Fix spacing inconsistencies in ActivityOutputRegister.cs

Resolved unnecessary whitespace issues and adjusted spacing around conditional statements to improve code readability and maintain consistency. These changes do not alter functionality but enhance the code's clarity and professional formatting.

src/modules/Elsa.Workflows.Core/Models/ActivityOutputRegister.cs

@@ -45,17 +45,17 @@ public void Record(ActivityExecutionContext activityExecutionContext, string? ou
             outputName = outputDescriptor.Name;
 
         var record = new ActivityOutputRecord(containerId, activityId, activityInstanceId, outputName, outputValue);
-        
+
         _recordsByActivityInstanceIdAndOutputName[CreateActivityInstanceIdLookupKey(activityInstanceId, outputName)] = record;
-        
+
         var scopedRecordsKey = CreateActivityIdLookupKey(activityId, outputName);
 
-        if(!_recordsByActivityIdAndOutputName.TryGetValue(scopedRecordsKey, out var scopedRecords))
+        if (!_recordsByActivityIdAndOutputName.TryGetValue(scopedRecordsKey, out var scopedRecords))
         {
             scopedRecords = new();
             _recordsByActivityIdAndOutputName[scopedRecordsKey] = scopedRecords;
         }
-        
+
         scopedRecords.Add(record);
     }
 
@@ -77,8 +77,8 @@ public IEnumerable<ActivityOutputRecord> FindMany(string activityId, string? out
     public object? FindOutputByActivityId(string activityId, string? outputName = null)
     {
         var key = CreateActivityIdLookupKey(activityId, outputName);
-        return !_recordsByActivityIdAndOutputName.TryGetValue(key, out var records) 
-            ? null 
+        return !_recordsByActivityIdAndOutputName.TryGetValue(key, out var records)
+            ? null
             : records.FirstOrDefault()?.Value;
     }
 
@@ -91,11 +91,11 @@ public IEnumerable<ActivityOutputRecord> FindMany(string activityId, string? out
     public object? FindOutputByActivityInstanceId(string activityInstanceId, string? outputName = null)
     {
         var key = CreateActivityInstanceIdLookupKey(activityInstanceId, outputName);
-        return !_recordsByActivityInstanceIdAndOutputName.TryGetValue(key, out var record) 
-            ? null 
+        return !_recordsByActivityInstanceIdAndOutputName.TryGetValue(key, out var record)
+            ? null
             : record.Value;
     }
-    
+
     private string CreateActivityIdLookupKey(string activityId, string? outputName) => $"{activityId}:{outputName ?? DefaultOutputName}";
     private string CreateActivityInstanceIdLookupKey(string activityInstanceId, string? outputName) => $"{activityInstanceId}:{outputName ?? DefaultOutputName}";
 }