activateIfOpen doesn't activate if open

[bridiver]

• Did you search for similar issues before submitting this one?
  Yes

• Describe the issue you encountered:
  opening about:* using shortcuts/context menus should activate the tab if it is already open, but it opens a new tab instaed

• Platform (Win7, 8, 10? macOS? Linux distro?):
  All

• Brave Version (revision SHA):
  62f69f1

• Steps to reproduce:

  1. Open a new window
  2. Open prefs with the menu
  3. Open another tab
  4. Open prefs again with the menu

• Actual result:
  A new tab opens

• Expected result:
  The existing tab should be activated

• Will the steps above reproduce in a fresh profile? If not what other info can be added?
  Yes

• Is this an issue in the currently released version?
  Yes

• Can this issue be consistently reproduced?
  Yes