bug symfony#48816 [Cache] Fix for RedisAdapter without auth parameter (rikvdh)

This PR was merged into the 5.4 branch.

Discussion
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[Cache] Fix for RedisAdapter without auth parameter

| Q             | A
| ------------- | ---
| Branch?       | 5.4
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | Fix symfony#48813
| License       | MIT
| Doc PR        | x

Compatibility with Redis without auth was broken by symfony#48711, this change fixes this.
This applies for all versions (6.x as well).

Commits
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0cf91ab fix for caching without auth parameter, broken by symfony#48711, fix for symfony#48813

Author: chalasr

src/Symfony/Component/Cache/Traits/RedisTrait.php

@@ -206,8 +206,11 @@ public static function createConnection(string $dsn, array $options = [])
                     if (!isset($params['redis_sentinel'])) {
                         break;
                     }
-
-                    $sentinel = new \RedisSentinel($host, $port, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval'], $params['read_timeout'], ...\defined('Redis::OPT_NULL_MULTIBULK_AS_NULL') ? [$params['auth'] ?? ''] : []);
+                    $extra = [];
+                    if (\defined('Redis::OPT_NULL_MULTIBULK_AS_NULL') && isset($params['auth'])) {
+                        $extra = [$params['auth']];
+                    }
+                    $sentinel = new \RedisSentinel($host, $port, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval'], $params['read_timeout'], ...$extra);
 
                     if ($address = $sentinel->getMasterAddrByName($params['redis_sentinel'])) {
                         [$host, $port] = $address;
@@ -219,10 +222,13 @@ public static function createConnection(string $dsn, array $options = [])
                 }
 
                 try {
-                    @$redis->{$connect}($host, $port, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval'], $params['read_timeout'], ...\defined('Redis::SCAN_PREFIX') ? [[
-                        'auth' => $params['auth'] ?? '',
+                    $extra = [
                         'stream' => $params['ssl'] ?? null,
-                    ]] : []);
+                    ];
+                    if (isset($params['auth'])) {
+                        $extra['auth'] = $params['auth'];
+                    }
+                    @$redis->{$connect}($host, $port, $params['timeout'], (string) $params['persistent_id'], $params['retry_interval'], $params['read_timeout'], ...\defined('Redis::SCAN_PREFIX') ? [$extra] : []);
 
                     set_error_handler(function ($type, $msg) use (&$error) { $error = $msg; });
                     try {