Bruce, it might be worth sending that photo of the current LEVITON switch to them and asking if they have the same style available but with the switch ‘ON’ when the plunger is fully depressed. They probably do. The plunger assembly in the photo is threaded and a locking ring is holding it in place. Chances are the plunger itself is repairable/replaceable and the right version easily inserted.
You could make an adapter plate to mount that switch to with countersunk screws and then drill the adapter with two new holes to match the original pattern in the door frame where the plunger is centred between the two mounting holes. Assuming you have the wiggle room behind the frame to work with.
David
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