fix: DefaultBlockRequestHandler Adapt to SpringBoot 3

[cxhello]

Describe what this PR does / why we need it

DefaultBlockRequestHandler Adapt to SpringBoot 3

Does this pull request fix one issue?

Closes https://github.com/alibaba/Sentinel/issues/3298

Describe how you did it

org.springframework.web.reactive.function.server.ServerResponse#status(org.springframework.http.HttpStatus) method was modified in springboot 3 to org.springframework.web.reactive.function.server.ServerResponse#status(org.springframework.http.HttpStatusCode)

but Both versions are available org.springframework.web.reactive.function.server.ServerResponse#status(int) method. so i modified it.

Describe how to verify it

https://github.com/alibaba/spring-cloud-alibaba/issues/3688

Special notes for reviews

[robberphex]

Could you mind add unit test for this case? Which means, before this PR gets merged, the test will fail. The test is very helpful for long-runt maintains, and can prevent similar errors.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 45.92%. Comparing base (cd02b1d) to head (477e25a).

:exclamation: Current head 477e25a differs from pull request most recent head 95cc1f3. Consider uploading reports for the commit 95cc1f3 to get more accurate results

Files	Patch %	Lines
...ateway/sc/callback/DefaultBlockRequestHandler.java	0.00%	2 Missing :warning:
...g/webflux/callback/DefaultBlockRequestHandler.java	0.00%	2 Missing :warning:

Additional details and impacted files

@@             Coverage Diff              @@
##                1.8    #3379      +/-   ##
============================================
+ Coverage     45.89%   45.92%   +0.03%     
- Complexity     2145     2147       +2     
============================================
  Files           431      431              
  Lines         12903    12903              
  Branches       1727     1727              
============================================
+ Hits           5922     5926       +4     
+ Misses         6279     6277       -2     
+ Partials        702      700       -2     

Components	Coverage Δ
sentinel-adapter	43.22% <0.00%> (ø)
sentinel-cluster	23.71% <ø> (ø)
sentinel-core	59.64% <ø> (+0.01%)	:arrow_up:
sentinel-extension	46.32% <ø> (+0.13%)	:arrow_up:
sentinel-logging	54.54% <ø> (ø)

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[cxhello]

@robberphex added DefaultBlockRequestHandler unit test.

[cxhello]

@robberphex Are you still planning to process this PR?