feat(metric)!: enable sparse primary key encoding by default (#7195)

* feat(metric): enable sparse primary key encoding by default

Signed-off-by: WenyXu <wenymedia@gmail.com>

* chore: update config.md

Signed-off-by: WenyXu <wenymedia@gmail.com>

* fix: fix unit tests

Signed-off-by: WenyXu <wenymedia@gmail.com>

* fix: fix unit tests

Signed-off-by: WenyXu <wenymedia@gmail.com>

* fix sqlness

Signed-off-by: WenyXu <wenymedia@gmail.com>

* Update src/mito-codec/src/key_values.rs

Co-authored-by: Yingwen <realevenyag@gmail.com>

* feat: only allow setting primary key encoding for metric engine

Signed-off-by: evenyag <realevenyag@gmail.com>

* feat: support deleting rows from logical region instead of physical region

This keeps the behavior the same as put. It's easier to support sparse
encoding for deleting logical regions. Now the metric engine doesn't
support delete rows from physical region directly.

Signed-off-by: evenyag <realevenyag@gmail.com>

* test: update sqlness

Signed-off-by: evenyag <realevenyag@gmail.com>

* chore: remove unused error

Signed-off-by: WenyXu <wenymedia@gmail.com>

---------

Signed-off-by: WenyXu <wenymedia@gmail.com>
Signed-off-by: evenyag <realevenyag@gmail.com>
Co-authored-by: Yingwen <realevenyag@gmail.com>

tests/cases/standalone/common/basic.sql

@@ -47,10 +47,9 @@ INSERT INTO t1 VALUES ('host1',0, 0), ('host2', 1, 1,);
 
 SELECT * from t1;
 
--- issue #4649 should fail (do not support delete from logical table for now)
 delete from t1;
 
--- issue #4649 should succeed
+-- do not support DELETE FROM physical table for now
 delete from phy;
 
 CREATE TABLE t2 (ts timestamp time index, job string primary key, val double) engine = metric with ("on_physical_table" = "phy");