Enhancement: Change default fullscreen keybind (again) for Web versions

[MetaBreeze]

Issue Checklist

• I have properly named the enhancement
• I have checked the issues/discussions pages to see if the enhancement has been previously suggested

What is your suggestion, and why should it be implemented?

I saw that the default fullscreen keybind was changed from F to F11 in #2244, however this is an issue for the web version

Because F11 is also the keybind to make the entire page go fullscreen in most browsers, so instead of the game getting fullscreened, the entire page (either newgrounds or itch) gets fullscreened instead, example below

I'm pressing F11 here, you can see the keybind in the message that appears on the top
https://github.com/user-attachments/assets/2a7054ae-0514-4fd9-9126-57a642c304cf

I saw many people playing the Pico playable update on youtube and many struggled to fullscreen on web (some of them didn't even check the options menu, but I'm talking about the ones that did), so please change it to a not commonly used keybind

[Hundrec]

I'd like to bump this and say I think it's a really important issue, despite how small it sounds.
You could make the default fullscreen keybind different between the HTML5 and downloadable builds, resolving the web browser issue.

And while we're on the topic of inconvenient keybinds, please consider changing the mute keybind from 0. It can interfere with inputting values in the chart editor or other debug menus.