fix: add node state check in transfer leader procedure & Support multi-node concurrent shard opening.

[ZuLiangWang]

Which issue does this PR close?

Closes #

Rationale for this change

Fix the scheduling and failover bugs found in recent use.

What changes are included in this PR?

• Add node state check in TransferLeaderProcedure.
• Support multi-node concurrent shard opening to speed up replay.
• Add getShardNodes interface.

Are there any user-facing changes?

None.

How does this change test

Pass existing unit tests.

[codecov-commenter]

Codecov Report

Merging #134 (d9a196b) into main (494e15e) will decrease coverage by 1.54%.
The diff coverage is 51.24%.

❗ Current head d9a196b differs from pull request most recent head 33146af. Consider uploading reports for the commit 33146af to get more accurate results

@@            Coverage Diff             @@
##             main     #134      +/-   ##
==========================================
- Coverage   39.07%   37.54%   -1.54%     
==========================================
  Files          33       34       +1     
  Lines        4217     4392     +175     
==========================================
+ Hits         1648     1649       +1     
- Misses       2317     2502     +185     
+ Partials      252      241      -11     

Impacted Files	Coverage Δ
server/cluster/cluster.go	0.00% <0.00%> (ø)
server/cluster/table_manager.go	0.00% <0.00%> (ø)
server/cluster/types.go	0.00% <0.00%> (ø)
server/coordinator/factory.go	0.00% <0.00%> (ø)
.../coordinator/procedure/create_table_common_util.go	0.00% <0.00%> (-70.50%)	⬇️
server/coordinator/procedure/util.go	0.00% <0.00%> (-38.89%)	⬇️
server/coordinator/scheduler.go	0.00% <0.00%> (ø)
...dml/createpartitiontable/create_partition_table.go	39.11% <35.29%> (ø)
...rdinator/procedure/dml/createtable/create_table.go	46.23% <46.23%> (ø)
.../coordinator/procedure/dml/droptable/drop_table.go	50.73% <50.73%> (ø)
... and 12 more

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[chunshao90]

LGTM