[baloo-widgets] Apply condensed date to file metadata properties

Summary:
In the dolphin information panel, the condensed date format was not being applied to metadata file properties (i.e EXIF), only to those related to file itself (modified/accessed/..)

BEFORE:

BUG: 406832

Test Plan:

• Open dolphin information panel and hover an image with EXIF info
• Condensed date option works on all the properties

Reviewers: Dolphin, elvisangelaccio, bruns, meven, ngraham

Reviewed By: Dolphin, meven, ngraham

Subscribers: meven, ngraham, bruns, Baloo

Tags: Baloo, Dolphin

Differential Revision: https://phabricator.kde.org/D23475