During cache compaction, we are sorting entries based on their LastAccessed time. However, since the cache entries can still be used concurrently on other threads, the LastAccessed time may be updated in the middle of sorting the entries. This leads to exceptions in a background thread, crashing the process.

The fix is to cache the LastAccessed time outside of the entry when we are adding it to the list. This will ensure the time is stable during the compaction process.

Fix dotnet#61032

…ctionRace