Bnd Editor: Effective Tab does not update for changes outside Eclipse

[chrisrueger]

@peterkir just reported a problem to me on Windows:

Eclipse preference > General Workspace activated

• Refresh using native hooks or polling
• Refresh on access

1. I have the build.bnd editor open on the Effective tab.
2. I edit the build.bnd file in the file system in another editor (vscode) and refresh Eclipse.

Expected behavior: Effective Tab should show the change

Actual behavior: Change not detected.

Note: The source tab recognizes the change and refreshes. Basically the same should happen for the effective Tab.