[Refactor] disable persistent index minor compaction (#29905)

be/src/common/config.h

@@ -978,7 +978,7 @@ CONF_mInt64(l0_snapshot_size, "16777216"); // 16MB
 CONF_mInt64(max_tmp_l1_num, "10");
 CONF_mBool(enable_parallel_get_and_bf, "true");
 // Control if using the minor compaction strategy
-CONF_mBool(enable_pindex_minor_compaction, "true");
+CONF_mBool(enable_pindex_minor_compaction, "false");
 // if l2 num is larger than this, stop doing async compaction,
 // add this config to prevent l2 grow too large.
 CONF_mInt64(max_allow_pindex_l2_num, "5");