scm: select node based on active editor

[vince-fugnitto]

What it does

Fixes: #11558.

The pull-request updates the scm-view to properly select the appropriate node in the changes tree based on the active editor.

How to test

1. start the application with a workspace under git version control
2. perform changes in two files
3. open the scm-view and open the working tree changes for both
4. switching between the two files should now properly set the tree selection
5. confirm it works for list and tree view modes
6. confirm it works for deep nested files
7. confirm it works for working tree, regular editors, and preview editors

Review checklist

• As an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• As a reviewer, I agree to behave in accordance with the review guidelines

Signed-off-by: vince-fugnitto [email protected]

[vince-fugnitto]

@msujew thank you for the review, I incorporated your suggestions and confirmed it works.

[msujew]

Looks good to me 👍

[colin-grant-work]

Based on our offline discussions, this appears to be the best way to achieve this end. 👍