[PR] Fix duplicate field cache being cleared in RowMeta (hop)

[via GitHub]

leehaut opened a new pull request, #6013:
URL: https://github.com/apache/hop/pull/6013

   fix https://github.com/apache/hop/issues/6008--  [Bug]: Problem with 
duplicate field names in timeline after 'Split fields' step
   
   Recalculate the position in the cache
   
   ``` java
       void insertAtMapping(String name, int index) {
         if (Utils.isEmpty(name) || index < 0) {
           return;
         }
   
         String key = name.toLowerCase();
         // For all values that are greater than or equal to the index, 
increment them by 1.
         mapping.replaceAll((k, v) -> v >= index ? v + 1 : v);
         mapping.put(key, index);
       }
   ```


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