Fix: rest of PDF link fix

src-ui/src/test/mocks/pdfjs-web-pdf_viewer.ts

@@ -25,10 +25,20 @@ export class PDFFindController {
   onIsPageVisible?: () => boolean
 }
 
+export const LinkTarget = {
+  NONE: 0,
+  SELF: 1,
+  BLANK: 2,
+  PARENT: 3,
+  TOP: 4,
+}
+
 export class PDFLinkService {
   private document?: unknown
   private viewer?: unknown
 
+  constructor(readonly options: Record<string, unknown> = {}) {}
+
   setDocument(document: unknown): void {
     this.document = document
   }