Fix accessibility failing test

[TimOsahenru]

Issue Link 🔗:

Issue: #654

Type of Change

• Bug fix 🐞
• New feature/page
• Documentation update
• Other

Description 📋

• Tweaked all the tests to run only WCAG 2.1 level A and AA rules as to running all the validity checks that axe-core support we can later remove the flags for stricter best practices results = axe.run(page, options={"runOnly": ["wcag2a", "wcag2aa"]}) instead of results = axe.run(page)

• Included a script for including the titles of auto-generated iframes

  script.onload = function () {
                const observer = new MutationObserver(function (mutations) {
                  const iframe = document.querySelector(".commitchange-iframe-embedded");
                  if (iframe && !iframe.hasAttribute("title")) {
                    iframe.setAttribute("title", "Donation form for Black Python Devs");
                    observer.disconnect(); // Stop observing once we've set the title
                  }
                });
  
                observer.observe(document.body, { childList: true, subtree: true });
              };

• Since we currently don't have support for multiple languages. I changed the LANG_ROUTES from

    LANG_ROUTES = (
    "/",
    "/about/",
    "/events/",
    "/community/",
    "/support/",
    "/blog/",
    )

- 
## Checklist ✅

- [x] Followed the [Code of Conduct](https://github.com/BlackPythonDevs/blackpythondevs.github.io?tab=coc-ov-file) and [Contribution Guide](https://github.com/BlackPythonDevs/blackpythondevs.github.io/blob/469afd71943738b7209bfe56d5a4e35394fbaafc/CONTRIBUTING.md)
- [x] Ran `pre-commit run --all`
- [x] All tests pass locally
- [ ] Added tests (if applicable)
- [ ] Documentation updated (if applicable)