Open a SharePoint classic experience in FullScreen Mode

i am looking to embed a Sharepoint classic experience Calendar on an Modern Sharepoint Page and one of the ways that i thought of is to embed the server side rendered calendar within a Modern Page.

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Is there a way to open the classic experience page in FullScreen by default? By, possibly, appending some option in the query string?
I know that when the FullScreen Button is pressed, all it does is append a class called ms-fullscreenmode to the Body of the document like the one below

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