Fix placement of Create new... tooltip in navigation

Summary

The tooltip does not appear correctly with it's corresponding button.

Steps to reproduce

Hover over the + button in production.

Example Project

What is the current bug behavior?

What is the expected correct behavior?

Screenshot_2023-08-07_at_12.06.54_PM

Relevant logs and/or screenshots

Screenshot_2023-08-07_at_12.04.21_PM

Output of checks

Results of GitLab environment info

Expand for output related to GitLab environment info 
(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)

(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)

Results of GitLab application Check

Expand for output related to the GitLab application check 
(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)


(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)


(we will only investigate if the tests are passing)

Possible fixes