Fix tech docs inline search on Postgres

Fix bug where tech docs collator stores search indices with wrong entity ref casing. Make the collator to conform legacyPathCasing configuration option.

Signed-off-by: Jussi Hallila <jussi@hallila.com>

.changeset/hip-carrots-suffer.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs-backend': patch
+---
+
+Fix bug where tech docs collator stores search indices with wrong entity ref casing. Make the collator to conform legacyPathCasing configuration option.

plugins/techdocs-backend/src/search/DefaultTechDocsCollator.ts

@@ -145,9 +145,7 @@ export class DefaultTechDocsCollator implements DocumentCollator {
                 path: doc.location,
               }),
               path: doc.location,
-              kind: entity.kind,
-              namespace: entity.metadata.namespace || 'default',
-              name: entity.metadata.name,
+              ...entityInfo,
               entityTitle: entity.metadata.title,
               componentType: entity.spec?.type?.toString() || 'other',
               lifecycle: (entity.spec?.lifecycle as string) || '',