Fix auto-share shortcut on first use (#9072)

* Fix auto-share shortcut on first use


- Re-read the share actions after creating the lazy-loaded share menu.
- Restore the documented one-key share behavior when exactly one action is configured.

## Why

The shortcut checked the action count before it built the menu. On first use it therefore found no action and required a second press.

Fixes #7299.

* Slight variable scope adjustment

---------

Co-authored-by: Gerard Alvear <gerard.alvear@logiqd.me>
Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

p/scripts/main.js

@@ -873,9 +873,10 @@ function auto_share(key) {
 	if (!share) {
 		return;
 	}
-	const shares = share.parentElement.querySelectorAll('.dropdown-menu .item [data-type]');
+	let shares;
 	if (typeof key === 'undefined') {
 		show_share_menu(share);
+		shares = share.parentElement.querySelectorAll('.dropdown-menu .item [data-type]');
 
 		// Display the share div
 		location.hash = share.id;
@@ -895,6 +896,7 @@ function auto_share(key) {
 			return;
 		}
 	}
+	shares = share.parentElement.querySelectorAll('.dropdown-menu .item [data-type]');
 	// Trigger selected share action and hide the share div
 	key = parseInt(key);
 	if (key <= shares.length) {