feat: Reverting unwanted/tested changes from upstream

[billyvg]

Reverts the following commits from upstream that we do not want or have not tested yet:

• Enable preserveSource
• Fix serialization and mutation of elements</a></li> <li><a rel="noreferrer nofollow" target="_blank" href="https://github.com/getsentry/rrweb/commit/123a81e12d072cd95d701231176d7eb2d03b3961">Full overhawl of video & audio playback to make it more complete</a></li> <li><a rel="noreferrer nofollow" target="_blank" href="https://github.com/getsentry/rrweb/commit/07ac5c9e1371824ec3ffb705f9250bbe10f4b73e">Masking: Avoid the repeated calls to closest when recursing through the DOM</a></li> </ul> </div> </div> <div class="page-bar-simple"> </div> <div class="footer"> <ul class="body"> <li>© <script> document.write(new Date().getFullYear()) </script> Githubissues.</li> <li>Githubissues is a development platform for aggregating issues.</li> </ul> </div> <script src="https://cdn.jsdelivr.net/npm/jquery@3.5.1/dist/jquery.min.js"></script> <script src="/githubissues/assets/js.js"></script> <script src="/githubissues/assets/markdown.js"></script> <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.4.0/build/highlight.min.js"></script> <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.4.0/build/languages/go.min.js"></script> <script> hljs.highlightAll(); </script> </body> </html>