Took this as an easy starter. The method IslandWindow::SetAlwaysOnTop is
triggered once terminal settings are reloaded (in
TerminalPage::_RefreshUIForSettingsReload flow). This method calls
SetWindowPos without SWP_NOACTIVATE. As a result the window gets
activated, the focus is set and the cursor starts blinking.
Added SWP_NOACTIVATE in all SetWindowPos calls from IslandWindow and
NoClientIslandWindow (where it was missing). Please let me know if this
is an overkill - it is not required to fix the issue, however seems a
good practice, that might help if we decide to apply more settings
immediately.
## Validation Steps Performed
* Only manual testing - please guide me to the relevant UT framework, if
exists.
* Trying to reproduce this with VS attached doesn't work - the window
gets the focus in any case.
* Tested as a standalone application, by modifying different settings
(and comparing the results before and after the fix).
* Checked with Spy++ that no WM_ACTIVATE / WM_SETFOCUS is thrown upon
settings modification
* Applied terminal resizing, toggling full screen and focus mode to
check no regression was introduced.
Closes#7571
cb732a4bcc