deprecate: deprecate setSrc method using StreamResource api

StreamResource api is deprecated since Vaadin 24.8.0. DownloadHandler should be used instead.

Author: paodb

vcf-pdf-viewer/src/main/java/com/vaadin/componentfactory/pdfviewer/PdfViewer.java

@@ -96,7 +96,9 @@ public void setSrc(String src) {
    * -> getPdfInputStream("mypdf.pdf");}
    *
    * @param src stream to file
+   * @deprecated use {@link #setSrc(DownloadHandler)} instead
    */
+  @Deprecated(since = "5.0.0", forRemoval = true)
   public void setSrc(AbstractStreamResource src) {
     getElement().setAttribute("src", src);
     updateDownloadSource();