[9.2] [Streams] Minor UX Improvement - In Schema tab, move directly mapped fields above Inherited fields (#241265) (#241338)

# Backport

This will backport the following commits from `main` to `9.2`:
- [[Streams] Minor UX Improvement - In Schema tab, move directly mapped
fields above Inherited fields
(#241265)](#241265)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

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Co-authored-by: Nikita Lavrov <[email protected]>
Co-authored-by: Joe Reuter <[email protected]>

Author: 3 people

x-pack/platform/plugins/shared/streams_app/public/components/data_management/schema_editor/hooks/use_schema_fields.ts

@@ -266,5 +266,5 @@ export const getDefinitionFields = (definition: Streams.ingest.all.GetResponse):
     status: 'mapped',
   }));
 
-  return [...inheritedFields, ...mappedFields];
+  return [...mappedFields, ...inheritedFields];
 };