Add missing UPGRADE notes for 7.1

Author: wouterj

ExpressionLanguage.php

@@ -101,7 +101,7 @@ public function parse(Expression|string $expression, array $names, int $flags =
     public function lint(Expression|string $expression, ?array $names, int $flags = 0): void
     {
         if (null === $names) {
-            trigger_deprecation('symfony/expression-language', '7.1', 'Passing "null" as the second argument of "%s()" is deprecated, pass "self::IGNORE_UNKNOWN_VARIABLES" instead as a third argument.', __METHOD__);
+            trigger_deprecation('symfony/expression-language', '7.1', 'Passing "null" as the second argument of "%s()" is deprecated, pass "%s\Parser::IGNORE_UNKNOWN_VARIABLES" instead as a third argument.', __METHOD__, __NAMESPACE__);
 
             $flags |= Parser::IGNORE_UNKNOWN_VARIABLES;
             $names = [];

Parser.php

@@ -112,7 +112,7 @@ public function parse(TokenStream $stream, array $names = [], int $flags = 0): N
     public function lint(TokenStream $stream, ?array $names = [], int $flags = 0): void
     {
         if (null === $names) {
-            trigger_deprecation('symfony/expression-language', '7.1', 'Passing "null" as the second argument of "%s()" is deprecated, pass "self::IGNORE_UNKNOWN_VARIABLES" instead as a third argument.', __METHOD__);
+            trigger_deprecation('symfony/expression-language', '7.1', 'Passing "null" as the second argument of "%s()" is deprecated, pass "%s::IGNORE_UNKNOWN_VARIABLES" instead as a third argument.', __METHOD__, __CLASS__);
 
             $flags |= self::IGNORE_UNKNOWN_VARIABLES;
             $names = [];