fix: Unset change_level if level_compaction_dynamic_level_bytes is enabled #3020
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See facebook/rocksdb#13671 for more details, but TLDR is when both
change_levelandlevel_compaction_dynamic_level_bytesare set, RocksDB will try to thrash the data between L1 and L6. Underlevel_compaction_dynamic_level_bytes, the intention is to fill up the "base" level first to reduce storage amplification, so we should not setchange_levelFixes #2601