Fix dir change when show hidden terminal panel with running program in it
Summary: Terminal panel doesn't change its working directory, while any procces is running in it. However, if you hide it and show again the program will get a string with a //cd path// command.
Test Plan:
1. Open dolphin
2. Press F4
3. Start any process like gnu nano
4. Press F4 two more times
projects / dolphin.git / commit