modify zoom command to start magnifier if not running (#19954)
Closes #19624
Summary of the issue:
Magnifier does not match Windows Magnifier behavior. Attempting to "zoom in" with NVDA+shift+plus while magnifier is not running results in a warning rather than starting the magnifier.
Description of user facing changes:
NVDA+shift+plus can now start the magnifier if it wasn't previously running. Keyset continues to serve as a "zoom in" command once magnifier is running.
Description of developer facing changes:
None.
Description of development approach:
A check has been added to the zoom function in commands.py that will call toggleMagnifier() if the magnifier is not already active and the zoom direction is positive. Otherwise, zoom behaves as expected.
