text: Title: [FEATURE] Expose the way to configure header generation
  Body: ### Is your feature request related to a problem? Please describe
  
  The default generation strategy often leads to a failures coming from the webserver or the framework. In such cases users may want (as discussed multiple times) to tune data generation 
  
  ### Describe the solution you'd like
  
  some function that will adjust the internal headers format.
  
  ### Additional context
  
  Relevant PR - https://github.com/WordPress/openverse/pull/4126
  