FileManager: Fix shortcuts

Fix shortcuts behavior when FileManager is already open.

Repro:
1) Open FileManager
2) Create shortcut for folder
3) Navigate to another folder (not including new folder)
4) Switch to homescreen (launcher)
5) Select the shortcut created in step 2

Expected behavior:
Navigate to shortcut folder

Observed behavior:
FileManager shows last navigated directory (before going to launcher)

(cherry picked from commit 8f0fb94de32e1ea773ce165bf5bc95122099171d)
Change-Id: Icd03d38aa1d879d46f1c9a6d4c7efb15c3fb0b3f
Ticket: QRDL-1034