fix(server): prevent feedback loop during library scan (#7944)

* prevent feedback loop

* add nesting

* made nesting less ugly

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

server/test/fixtures/library.stub.ts

@@ -1,4 +1,6 @@
+import { APP_MEDIA_LOCATION, THUMBNAIL_DIR } from '@app/domain';
 import { LibraryEntity, LibraryType } from '@app/infra/entities';
+import { join } from 'node:path';
 import { userStub } from './user.stub';
 
 export const libraryStub = {
@@ -100,4 +102,18 @@ export const libraryStub = {
     isVisible: true,
     exclusionPatterns: ['**/dir1/**'],
   }),
+  hasImmichPaths: Object.freeze<LibraryEntity>({
+    id: 'library-id1337',
+    name: 'importpath-exclusion-library1',
+    assets: [],
+    owner: userStub.admin,
+    ownerId: 'user-id',
+    type: LibraryType.EXTERNAL,
+    importPaths: [join(THUMBNAIL_DIR, 'library'), '/xyz', join(APP_MEDIA_LOCATION, 'library')],
+    createdAt: new Date('2023-01-01'),
+    updatedAt: new Date('2023-01-01'),
+    refreshedAt: null,
+    isVisible: true,
+    exclusionPatterns: ['**/dir1/**'],
+  }),
 };