Tighter match own service when trying to find suitable window to open path in.
Current implementation matches org.kde.dolphin-.*PID while trying to exclude itself from the list of running instances.
With this fix applied only org.kde.dolphin-PID is matched.
Test Plan: Open dolphin twice. Observe only one window.
Reviewers: feverfew, Dolphin, elvisangelaccio
Reviewed By: Dolphin, elvisangelaccio
Subscribers: elvisangelaccio, kfm-devel
Differential Revision: https://phabricator.kde.org/D21547