fix(snippets): disable sidebar collapse/expand when clicking "Your Library" @`Dynamic Left Sidebar`

[Ender-Wang]

• In this PR I disabled the pointer action on Your Library, which removed the clicking ability on Your Library, so the side bar will not be like this:

• But if someone uses betterLibrary too, s/he will not be able to click 'Your Library', hence I made another version that works with betterLibrary.