fix: propogate health status for pipeline

[veds-g]

Fixes #2070

• updated cluster summary api to return health status based on health checker to return critical and warning status
• TODO: cover the same status for mono vertex, also the monoVertex health is hardcoded to healthy in both backend and UI.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 33 lines in your changes missing coverage. Please review.

Project coverage is 69.56%. Comparing base (eb4dd43) to head (cf556b7).

Files with missing lines	Patch %	Lines
server/apis/v1/handler.go	0.00%	33 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2547      +/-   ##
==========================================
- Coverage   69.59%   69.56%   -0.04%     
==========================================
  Files         391      391              
  Lines       58130    58162      +32     
==========================================
+ Hits        40458    40462       +4     
- Misses      16589    16620      +31     
+ Partials     1083     1080       -3     

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[whynowy]

How bad is the performance (e.g.with 20, 50 pipelines)?