Fixes Issue 683 - In specific situation in tab 4 the "Open File" button at bottom isn't active when it should be. It can also open the wrong datapoint for the user.

This was completely broken for the calibration tab, should be fixed now

[#61901616]
Emit selection changed even if it didn't to trigger button updates

[#61901616]
Merge pull request #738 from NREL/61901616_PATResultsFileButton683

61901616 pat results file button683