fix(snowflakes): fix APCu cache restarted detection

[Altahrim]

apcu_cache_info use start_time and not creation_time.
Example:

array(15) {
  'num_slots' => int(16411)
  'ttl' => int(0)
  'num_hits' => double(0)
  'num_misses' => double(0)
  'num_inserts' => double(0)
  'num_entries' => int(0)
  'cleanups' => int(0)
  'defragmentations' => int(0)
  'expunges' => int(0)
  'start_time' => int(1761836495)
  'mem_size' => double(0)
  'memory_type' => string(4) "mmap"
}

[provokateurin]

Had this issue as well 👍