Update Firefox 134 release notes for WebDriver conforming changes

[juliandescottes]

Release notes update based on the following list of relnote worthy bugs.

(excluding contributor bugs which will be mentioned in our fxdx blog post)

[juliandescottes]

@whimboo for now I excluded the changes related to parent-actions, because this is only enabled in 135. Let me know.

[github-actions]

Preview URLs

• /en-US/docs/Mozilla/Firefox/Releases/134

External URLs (9)

URL: /en-US/docs/Mozilla/Firefox/Releases/134
Title: Firefox 134 for developers

• https://bugzilla.mozilla.org/show_bug.cgi?id=1806135 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1810718 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1855025 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1904892 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1922014 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1924859 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1927073 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1930849 (1 time) (Note! This may be a new URL 👀)
• https://bugzilla.mozilla.org/show_bug.cgi?id=1933331 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2025-01-03 08:01:57)

[whimboo]

Thanks Julian! Just a nit.