Refactor query behaviors for execution tracking

Refactored `BodyQueryBehavior` and `HeaderQueryBehavior` to introduce explicit execution tracking with new properties (`BodyQueryExecuted` and `HeaderQueryExecuted`). Updated `RecActionDto` to include computed properties (`IsBodyQueryReturnedNoData` and `IsHeaderQueryReturnedNoData`) for clearer null-checking logic. Removed the `IsReturnedNoData` tuple for simplicity.

Updated `InvokeRecActionCommandHandler` to use the new `IsBodyQueryReturnedNoData` property. Improved logging for better diagnostics and clarified handling of null results in query behaviors.

src/ReC.Application/Common/Behaviors/BodyQueryBehavior.cs

@@ -14,6 +14,9 @@ public class BodyQueryBehavior<TRecAction>(IRecDbContext dbContext) : IPipelineB
             return await next(cancel);
 
         var result = await dbContext.BodyQueryResults.FromSqlRaw(action.BodyQuery).SingleOrDefaultAsync(cancel);
+
+        action.BodyQueryExecuted = true;
+
         action.Body = result?.RawBody;
 
         return await next(cancel);