IgniteClusterSnapshotRestoreSelfTest and IgniteClusterSnapshotRestoreWithIndexingTest takes too long time to complete

After increasing the number of partitions in AbstractSnapshotSelfTest (IGNITE-15146), the run times for most automatic snapshot recovery tests have been significantly increased.

For example duration of testRestoreAllGroupsWithoutConsistentId has been increased from 8-12 seconds to 45-60 seconds.

It seems that we can significantly reduce the execution time of tests using the TEST_SCALE_FACTOR property and run these tests with 1024 partitions only in nightly builds.