refactor: original should be removed when session id changed

[guqing]

What type of PR is this?

/kind improvement
/area core

What this PR does / why we need it:

当 session id 改变时清除原来的 session id 记录

Does this PR introduce a user-facing change?

None

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 56.61%. Comparing base (5fdf6c0) to head (958a9fc).
Report is 172 commits behind head on main.

Files	Patch %	Lines
...sion/InMemoryReactiveIndexedSessionRepository.java	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #5931      +/-   ##
============================================
- Coverage     56.91%   56.61%   -0.31%     
- Complexity     3319     3468     +149     
============================================
  Files           587      612      +25     
  Lines         18968    20528    +1560     
  Branches       1401     1419      +18     
============================================
+ Hits          10795    11621     +826     
- Misses         7594     8323     +729     
- Partials        579      584       +5     

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.2% Duplication on New Code

See analysis details on SonarCloud

[JohnNiang]

/approve

[ruibaby]

/lgtm

[f2c-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: JohnNiang, ruibaby

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