"Pausing" Imagery telemetry in Fixed Time mode shows alert styling, but shouldn't

[charlesh88]

When the Time Conductor is in real-time mode, when the user pauses the view by clicking the Pause button or clicking a thumbnail view we show an alert orange border and coloring to indicate that the view will no longer be automatically updated to show new incoming imagery:

This is correct and expected.
However, the same styling is being applied when the Time Conductor is in Fixed Time mode:

This doesn't make sense: the intent of the model is that Fixed Time utilizes bounded start and end datetimes and there is no expectation that the latest data will be displayed. Showing the alert styling when pausing in this mode promotes a false expectation that the user will see the latest data if they unpause the view.

The Imagery view in Fixed Time mode should be changed as follows:

• Do not display the Pause button.
• Clicking a thumbnail shouldn't "pause" the view, and therefore no alert styling should ever be displayed.
• If the Time Conductor is in real-time mode, and the user pauses the view and then switches to Fixed Time mode, the currently selected thumbnail should still be selected but the Pause button should be hidden and the alert styling should not be displayed.

[nikhilmandlik]

Verified Fixed.