[11.x] Give session ID retrieval the Laravel treatment (#51732)

* Adds id method to session

* Update facade

Author: timacdonald

src/Illuminate/Session/Store.php

@@ -643,6 +643,16 @@ public function setName($name)
         $this->name = $name;
     }
 
+    /**
+     * Get the current session ID.
+     *
+     * @return string
+     */
+    public function id()
+    {
+        return $this->getId();
+    }
+
     /**
      * Get the current session ID.
      *

src/Illuminate/Support/Facades/Session.php

@@ -50,6 +50,7 @@
  * @method static bool isStarted()
  * @method static string getName()
  * @method static void setName(string $name)
+ * @method static string id()
  * @method static string getId()
  * @method static void setId(string|null $id)
  * @method static bool isValidId(string|null $id)