[Time Conductor] zoom/pan in realtime plot removed on time conductor input click

[davetsay]

Overview

Zoom/Pan state is lost when clicking on time conductor inputs in realtime mode.

Expected Behavior

Zoom/Pan state should only be reset if start end values are saved

Steps to Reproduce

1. Navigate to a plot
2. Go to realtime mode if not already
3. Zoom or pan plot
4. Click on start or end input and see that zoom/pan state is lost
5. For comparison go to fixed time mode and repeat steps 3-4. zoom/pan state is not lost.

Additional Testing

1. Click on time conductor inputs and see if there is a memory leak

[jvigliotta]

Verified - Testathon 7/16/2021

[nikhilmandlik]

Verified Fixed.