Fix/scenic 2861
Fix some GLFW regression bugs that appeared after https://gitlab.com/sat-metalab/switcher/merge_requests/207
- When clicking on another window, fullscreen windows disappear (https://jira.sat.qc.ca/browse/SCENIC-2861)
- Not possible to have more than 1 video monitor fullscreen at the same time (https://jira.sat.qc.ca/browse/SCENIC-2865)
- Fullscreen video monitors open in wrong screen (https://jira.sat.qc.ca/browse/SCENIC-2868)