catalog-model: deprecate ENTITY_DEFAULT_NAMESPACE, replace with DEFAULT_NAMESPACE

Signed-off-by: Johan Haals <johan.haals@gmail.com>

plugins/search/src/components/LegacySearchPage/LegacySearchResult.tsx

@@ -20,7 +20,7 @@ import useAsync from 'react-use/lib/useAsync';
 import { catalogApiRef } from '@backstage/plugin-catalog-react';
 
 import { Filters, FiltersButton, FiltersState } from './Filters';
-import { Entity, ENTITY_DEFAULT_NAMESPACE } from '@backstage/catalog-model';
+import { Entity, DEFAULT_NAMESPACE } from '@backstage/catalog-model';
 
 import {
   EmptyState,
@@ -156,7 +156,7 @@ export const SearchResult = ({ searchQuery }: SearchResultProps) => {
           : undefined,
       url: `/catalog/${
         entity.metadata.namespace?.toLocaleLowerCase('en-US') ||
-        ENTITY_DEFAULT_NAMESPACE
+        DEFAULT_NAMESPACE
       }/${entity.kind.toLocaleLowerCase('en-US')}/${entity.metadata.name}`,
     }));
   }, []);