Use the creation date in the popup when there is no modification date

Remove the h1 element in popup title because it caused a warning in Firefox and use a span instead.

Author: calixteman

src/core/annotation.js

@@ -3842,6 +3842,7 @@ class PopupAnnotation extends Annotation {
       return;
     }
     this.data.parentRect = lookupNormalRect(parentItem.getArray("Rect"), null);
+    this.data.creationDate = parentItem.get("CreationDate") || "";
 
     const rt = parentItem.get("RT");
     if (isName(rt, AnnotationReplyType.GROUP)) {

src/display/annotation_layer.js

@@ -2070,7 +2070,7 @@ class PopupAnnotationElement extends AnnotationElement {
       container: this.container,
       color: this.data.color,
       titleObj: this.data.titleObj,
-      modificationDate: this.data.modificationDate,
+      modificationDate: this.data.modificationDate || this.data.creationDate,
       contentsObj: this.data.contentsObj,
       richText: this.data.richText,
       rect: this.data.rect,
@@ -2211,14 +2211,17 @@ class PopupElement {
 
     const header = document.createElement("span");
     header.className = "header";
-    const title = document.createElement("h1");
-    header.append(title);
-    ({ dir: title.dir, str: title.textContent } = this.#titleObj);
+    if (this.#titleObj?.str) {
+      const title = document.createElement("span");
+      title.className = "title";
+      header.append(title);
+      ({ dir: title.dir, str: title.textContent } = this.#titleObj);
+    }
     popup.append(header);
 
     if (this.#dateObj) {
       const modificationDate = document.createElement("time");
-      modificationDate.classList.add("popupDate");
+      modificationDate.className = "popupDate";
       modificationDate.setAttribute(
         "data-l10n-id",
         "pdfjs-annotation-date-time-string"

web/annotation_layer_builder.css

@@ -342,8 +342,9 @@
     display: inline-block;
   }
 
-  .popup > .header h1 {
+  .popup > .header > .title {
     display: inline;
+    font-weight: bold;
   }
 
   .popup > .header .popupDate {