Update in-product doc links to point to docs.overleaf.com (#35184)

* update doc links to point to docs.overleaf.com instead of the old learn wiki

* fix broken link to LaTeX positioning wiki article in figure modal help

* point figure positioning help link to the docs.overleaf.com page

* point figure/table label help links to specific anchors on the captioning-and-referencing-figures doc page

* point figure modal error-help link to the graphicx-loading doc page

* normalize target/rel on docs.overleaf.com links opened in a new tab

* open figure modal and SSO help links in a new tab now that they point off-site

* add eslint rule enforcing rel=noopener noreferrer on docs.overleaf.com links

* extend require-rel-for-docs-links to also check OLButton

* add lint script catching missing rel on docs.overleaf.com links in pug templates

* fix require-rel-for-docs-links autofix crash on valueless rel attribute

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* add regression test for require-rel-for-docs-links valueless-rel autofix

* revert `target=_blank` on figure modal and SSO help links

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
GitOrigin-RevId: b6111341e1080fd7e4b42f6a1a18c27ea0fd7d8c

services/web/frontend/js/features/ide-react/components/modals/out-of-sync-modal.tsx

@@ -50,7 +50,7 @@ function OutOfSyncModal({ editorContent, show, onHide }: OutOfSyncModalProps) {
             <a
               target="_blank"
               rel="noopener noreferrer"
-              href="/learn/Kb/Editor_out_of_sync_problems"
+              href="https://docs.overleaf.com/troubleshooting-and-support/resolving-pdf-rendering-and-project-loading-problems"
             />,
           ]}
         />