Change `👁 Preview this file`/`Set as preview` to `🏠 Set as main`?

[YDX-2147483647]

I suggest changing the UI texts in the following screenshots from preview from main.

Argument

The effect of 👁 Preview this file is counterintuitive.

• It does not control the preview panel.
• There's always an eye open, even if the preview panel is turned off.
• Clicking the button won't close the eye. Clicking other buttons closes the eye.
• If you split the document into chapters with #include statements, then clicking the button usually doesn't work, because cross-references will be broken. (This causes a part of Weird "The label does not exist" error on an existing bibtex entry #724.)

The following is a real feedback on a community platform. The poor guy failed to figure out why citations suddenly “do not exist in the document”. It's terrifying to see 33 errors pop up.