chore: restrict username and password length during user registration

[guqing]

What type of PR is this?

/kind improvement
/area core
/milestone 2.20.x

What this PR does / why we need it:

为注册用户增加用户名和密码长度校验

Does this PR introduce a user-facing change?

None

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 57.03%. Comparing base (d7aba83) to head (e341c8a).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
...n/halo/app/core/endpoint/console/UserEndpoint.java	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6808      +/-   ##
============================================
- Coverage     57.03%   57.03%   -0.01%     
  Complexity     3978     3978              
============================================
  Files           713      713              
  Lines         23992    23999       +7     
  Branches       1570     1572       +2     
============================================
+ Hits          13685    13687       +2     
- Misses         9696     9700       +4     
- Partials        611      612       +1     

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[JohnNiang]

需要先解决一下冲突。

[guqing]

需要先解决一下冲突。

Done

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[JohnNiang]

/lgtm

[f2c-ci-robot]

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