update NFS header migration scope

Roll back the TechDocs, catalog graph, and catalog import migrations for now while keeping the shared sub-page routing fix and the page-level header cleanup for search, notifications, and catalog entity pages.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

.changeset/nfs-header-page-migrations.md

@@ -2,13 +2,10 @@
 '@backstage/plugin-api-docs': patch
 '@backstage/plugin-auth': patch
 '@backstage/plugin-catalog': patch
-'@backstage/plugin-catalog-graph': patch
-'@backstage/plugin-catalog-import': patch
 '@backstage/plugin-catalog-unprocessed-entities': patch
 '@backstage/plugin-devtools': patch
 '@backstage/plugin-notifications': patch
 '@backstage/plugin-search': patch
-'@backstage/plugin-techdocs': patch
 '@backstage/plugin-user-settings': patch
 ---