Add the ability too see all comments for the pull request

You can see only amount of comments on main pull requests page, but if you want to read them you have to scroll over all files in the pull request.

Latest update from Atlassian 2023-07-31

We've released updated comment navigation that makes it easier to traverse pull request comments:
https://bitbucket.org/blog/finish-code-reviews-faster-with-improved-comment-navigation