fix(a11y): restore underlines for links in main content (mdn#5416)

Restore underlines for `:link` and `:visited` states for links in the main document content.

fix mdn#5394

remove top level notifications icon (mdn#5555)

* remvoe top level notifications icon

* mitigate dayjs?! issue

* use unread filter

* blue notification dot

chore(build): wrap all tables (mdn#5560)

* chore(build): wrap tables in scrollable div

Previously, only Markdown tables were wrapped to avoid
overflows with the TOC sidebar on the right.

However, content also contains HTML tables.

Now, we wrap all tables.

* Revert "chore(markdown): wrap tables in scrollable div (mdn#5472)"

This reverts commit b3b9626.

fix(notecards): adjust icon position (mdn#5558)

This fix makes the icon align with the first line of the text.

Update Learn sidebar for async changes (mdn#5556)

chore(bcd): move release-date title to version label (mdn#5554)

Previously, the BCD cells had a title on the cell and on the icon.
The cell title had the release date, and the icon its explanation.

For now, we keep two titles, but the release date is now on the version.

Removed custom settings from UI. Also fix watch menu icons (mdn#5553)

* Removed custom settings from UI. Also fix watch menu icons

* Remove components

fix(switch): replace browser-specific margin (mdn#5552)

We were relying on browser specific styles and it was broken in
webkit.

upload the root index.html to S3 (mdn#5550)

This allows us to bootstrap the react app when needed.

chore: migrate bug template to issue form (mdn#5549)

* chore: migrate bug template to issue form

Refs:
- https://github.com/kazupon/vue-i18n/blob/3cc049504f6fc8ba79560bf70b5f5af1aedd815c/.github/ISSUE_TEMPLATE/bug-report.yml
- https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-issue-forms

* chore: remove triage template