afterSignOutUrl and afterMultiSessionSingleSignOutUrl moved from UserButton to ClerkProvider

[alexisintech]

[!IMPORTANT] 🔎 Previews:

• ClerkProvider
• UserButton

Explanation:

Discord message pointed out that the UserButton doc has outdated info regarding the afterSignOutUrl prop clerk/javascript#3544 marks afterSignOutUrl and afterMultiSessionSingleSignOutUrl deprecated on UserButton and moves them to ClerkProvider

This PR:

• removes deprecated props from userbutton prop table
• reorganizes userbutton prop table in alphabetical order
• adds those props to clerkprovider
• reorganizes clerkprovider prop table in alphabetical order
• removes usage of deprecated props on userbutton instances
• fixes upgrade guides to use CLERK_SIGN_X_FALLBACK_REDIRECT > CLERK_SIGN_UP_FALLBACK"_REDIRECT

[github-actions[bot]]

Hey, here’s your docs preview: https://clerk.com/docs/pr/1222