Workboard: fix CTRL+click on "Create Task" and "Edit Task"

Summary:
The CTRL+click now opens the links in a new tab, like any other
normal link opened with CTRL+click.

Note that the middle-click was already working.

Closes T15157

Test Plan:

• visit a Workboard
• column > menu > mouse on "Create Task"
  • CTRL+click: open in new tab (→ now works)
  • normal click: open the pop-up (→ still works)
  • middle-click: open in new tab (→ still works)
• column > single Task > mouse on "Edit"
  • CTRL+click: open in new tab (→ now works)
  • normal click: open the pop-up (→ still works)
  • middle-click: open in new tab (→ still works)

Reviewers: O1 Blessed Committers, avivey

Reviewed By: O1 Blessed Committers, avivey

Subscribers: speck, tobiaswiese, Matthew, Cigaryno

Maniphest Tasks: T15157

Differential Revision: https://we.phorge.it/D25072