SQLite Busy Exceptions not being treated as cache misses

[Th3-M4jor]

We're experimenting with using SolidCache backed by SQLite in production and found that SolidCache::Store::Failsafe does not include SQLite::Busy exceptions as a possible transient error that would be treated is if it were a cache miss.

Since this is something that could still theoretically occur with sharding and a reasonable busy timeout on SQLite configured, should this be added to the list of possible transient ActiveRecord errors?