Improve Redis failure modes (#29405)

While investigating code paths during
Redis downtime, I found out that the library
by default retries indefinitely for read commmands.

This leads to it being stuck in a loop
while trying to read anything from Redis.
We fix that by disabling retry.

Secondly, we adjust the ConnWriteTimeout
value slightly from its default of 10s
which is a bit too high for normal working
conditions.

Ref: https://github.com/redis/rueidis/issues/680
```release-note
NONE
```

server/platform/services/cache/provider.go

@@ -100,6 +100,9 @@ func NewRedisProvider(opts *RedisOptions) (Provider, error) {
 		// meant to be used at very high scales. The docs suggest 20us,
 		// but going as high as 250us doesn't make any material difference.
 		MaxFlushDelay: 250 * time.Microsecond,
+		DisableRetry:  true,
+		// The default is 10s, which is a bit too high
+		ConnWriteTimeout: 5 * time.Second,
 	})
 	if err != nil {
 		return nil, err