Add static method call test cases for bug-14318

Cover the StaticCallHandler code path with regression tests
using static method calls (self::maybeThrows()) alongside
the existing instance method call tests.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: phpstan-bot

tests/PHPStan/Rules/Variables/data/bug-14318.php

@@ -57,3 +57,59 @@ public function maybeThrows6(int $s): void
 		}
 	}
 }
+
+class HelloWorld7
+{
+	public function test7(): void
+	{
+		global $pdo;
+
+		try {
+			self::maybeThrows7($sql = "SELECT * FROM foo");
+			$rs = $pdo->query($sql);
+			if ($result = $rs->fetch(\PDO::FETCH_ASSOC)) {
+				// do something
+			}
+		} catch (\PDOException $e) {
+			var_dump($sql);
+		}
+	}
+
+	/**
+	 * @throws \RuntimeException
+	 */
+	public static function maybeThrows7(string $s): void
+	{
+		if (random_int(0, 1) === 1) {
+			throw new \RuntimeException();
+		}
+	}
+}
+
+class HelloWorld8
+{
+	public function test8(): void
+	{
+		global $pdo;
+
+		try {
+			self::maybeThrows8(strlen($sql = "SELECT * FROM foo"));
+			$rs = $pdo->query($sql);
+			if ($result = $rs->fetch(\PDO::FETCH_ASSOC)) {
+				// do something
+			}
+		} catch (\PDOException $e) {
+			var_dump($sql);
+		}
+	}
+
+	/**
+	 * @throws \RuntimeException
+	 */
+	public static function maybeThrows8(int $s): void
+	{
+		if (random_int(0, 1) === 1) {
+			throw new \RuntimeException();
+		}
+	}
+}