Ignore the URLs when checking if inferred links overlap existing LinkAnnotations (PR 19110 follow-up)

*Note:* For the issue mentioned on Matrix it'll obviously still make sense to improve the regular expression to detect more URL edge-cases.

However it occurred to me that even once that particular case is fixed there'll always be a risk that inferred links could overlap, and effectively block, the actual LinkAnnotations.
Hence this patch removes the URL comparison to ensure that overlapping inferred links will always be ignored.

web/annotation_layer_builder.js

@@ -327,7 +327,7 @@ class AnnotationLayerBuilder {
       for (const annotation of this.#annotations) {
         if (
           annotation.annotationType !== AnnotationType.LINK ||
-          annotation.url !== link.url
+          !annotation.url
         ) {
           continue;
         }

web/app.js

@@ -353,6 +353,7 @@ const PDFViewerApplication = {
     // Set some specific preferences for tests.
     if (typeof PDFJSDev !== "undefined" && PDFJSDev.test("TESTING")) {
       Object.assign(opts, {
+        docBaseUrl: x => x,
         enableAltText: x => x === "true",
         enableAutoLinking: x => x === "true",
         enableFakeMLManager: x => x === "true",