Hardcode ENT_QUOTES as int 3 in disallowed-loose-calls.neon config

PHPStan 1.10.58 updated nette/di from v3.1.5 to v3.1.10 and possibly that's the reason why ::constant is not accepted anymore.
phpstan/phpstan-src#2907

The config file is tested so even if the value of the constant would change, however unlikely, it would be detected by failing tests.

Close #249

disallowed-loose-calls.neon

@@ -9,4 +9,4 @@ parameters:
 			function: 'htmlspecialchars()'
 			message: 'set the $flags parameter to `ENT_QUOTES` to also convert single quotes to entities to prevent some HTML injection bugs'
 			allowParamFlagsAnywhere:
-				2: ::constant(ENT_QUOTES)
+				2: 3 # ENT_QUOTES