bugfix: server restart not recover max sessionId on db mode

[slievrly]

Signed-off-by: slievrly slievrly@163.com

Ⅰ. Describe what this PR did

bugfix: server restart not recover max sessionId on db mode

Ⅱ. Does this pull request fix one issue?

fix #1851

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-io]

Codecov Report

Merging #1850 into develop will decrease coverage by 0.18%.
The diff coverage is 14.28%.

@@              Coverage Diff              @@
##             develop    #1850      +/-   ##
=============================================
- Coverage      55.34%   55.16%   -0.19%     
- Complexity      2376     2377       +1     
=============================================
  Files            422      422              
  Lines          14333    14392      +59     
  Branches        1719     1729      +10     
=============================================
+ Hits            7933     7939       +6     
- Misses          5656     5708      +52     
- Partials         744      745       +1

Impacted Files	Coverage Δ	Complexity Δ
...o/seata/core/constants/ServerTableColumnsName.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...io/seata/server/store/TransactionStoreManager.java	86.66% <ø> (ø)	0 <0> (ø)	⬇️
...rver/store/db/DatabaseTransactionStoreManager.java	66.16% <0%> (-0.51%)	22 <0> (ø)
...server/store/file/FileTransactionStoreManager.java	56.96% <0%> (-0.19%)	29 <0> (ø)
...main/java/io/seata/core/store/db/LogStoreSqls.java	19.6% <0%> (-0.81%)	10 <0> (ø)
...eata/server/session/db/DataBaseSessionManager.java	33.87% <0%> (-2.34%)	12 <0> (ø)
...va/io/seata/core/store/db/LogStoreDataBaseDAO.java	54.47% <12.82%> (-5.01%)	21 <0> (ø)
...r/src/main/java/io/seata/server/UUIDGenerator.java	63.33% <60%> (+1.79%)	5 <1> (+1)	⬆️
...io/seata/server/session/DefaultSessionManager.java	65.62% <9.09%> (-29.83%)	9 <1> (ø)

[xingfudeshi]

LGTM

[zjinlei]

no need to add 1

[slievrly]

fixed

[zjinlei]

LGTM