[bug] Diff view uses time range from other views for available filters #821

Bug description

Filters for the baseline and comparison sections of the Diff View don't get updated when the corresponding time range is changed. They do get updated when the time range is changed in other views (e.g. Flame Graph) and then we navigate to Diff View.

Steps to reproduce

1. Open the Diff View
2. Take note of the available label values for a label (e.g., labels like pod or service_git_ref) in the baseline or comparison view
3. Change the time range for the baseline or comparison view to an earlier time when those label values are expected to be different
4. Observe that the label values didn't update (are the same from step 2)
5. Navigate to the Flame Graph view and change the time range to an earlier time
6. Navigate back to the Diff View, observe that label values have updated (are different from step 2 and 4)