fix: correct display of email verification message toast

[ruibaby]

What type of PR is this?

/area core
/kind bug
/milestone 2.20.x

What this PR does / why we need it:

修复不能正常显示邮箱验证提示的问题。

Does this PR introduce a user-facing change?

None

[sonarqubecloud]

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 57.07%. Comparing base (d7aba83) to head (7b0a5bd).
Report is 22 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6822      +/-   ##
============================================
+ Coverage     57.03%   57.07%   +0.03%     
- Complexity     3978     3988      +10     
============================================
  Files           713      714       +1     
  Lines         23992    24042      +50     
  Branches       1570     1576       +6     
============================================
+ Hits          13685    13723      +38     
- Misses         9696     9706      +10     
- Partials        611      613       +2     

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[LIlGG]

/lgtm

[f2c-ci-robot]

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