[api-minor] Don't add in the text content the chars which are out-of-page (bug 1755201)

- it aims to fix https://bugzilla.mozilla.org/show_bug.cgi?id=1755201;
- if the glyph position is not within the view then skip it.

test/unit/api_spec.js

@@ -2219,6 +2219,22 @@ Caron Broadcasting, Inc., an Ohio corporation (“Lessee”).`)
       await loadingTask.destroy();
     });
 
+    it("gets text content, and check that out-of-page text is not present (bug 1755201)", async function () {
+      if (isNodeJS) {
+        pending("Linked test-cases are not supported in Node.js.");
+      }
+
+      const loadingTask = getDocument(buildGetDocumentParams("bug1755201.pdf"));
+      const pdfDoc = await loadingTask.promise;
+      const pdfPage = await pdfDoc.getPage(6);
+      const { items } = await pdfPage.getTextContent();
+      const text = mergeText(items);
+
+      expect(/win aisle/.test(text)).toEqual(false);
+
+      await loadingTask.destroy();
+    });
+
     it("gets empty structure tree", async function () {
       const tree = await page.getStructTree();