BF: Sending experiment to Runner was sometimes (wrongly) toggling pilot/run mode

[TEParsons]

Solution is to split up the code to update the buttons from the code to trigger the event, set modified, etc. so that selecting a new experiment on add can just update the buttons, not alter the experiment file or raise an event.

@mh105 could you pull down and try this out to confirm it fixes the bug you described?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 50.55%. Comparing base (8c041c4) to head (8a7ec21).
Report is 7 commits behind head on release.

Additional details and impacted files

@@             Coverage Diff             @@
##           release    #6945      +/-   ##
===========================================
- Coverage    50.55%   50.55%   -0.01%     
===========================================
  Files          332      332              
  Lines        61217    61225       +8     
===========================================
  Hits         30951    30951              
- Misses       30266    30274       +8     

Components	Coverage Δ
app	∅ <ø> (∅)
boilerplate	∅ <ø> (∅)
library	∅ <ø> (∅)
vm-safe library	∅ <ø> (∅)

[mh105]

Works beautifully. Thanks @TEParsons !