fix reconcile of mcpbridge

[johnlanni]

Ⅰ. Describe what this PR did

Fix the promblems below:

1. The wg.Wait may be blocked when the nacos server can not be connected.
2. The IngressConfig.HasSynced will return true before the processing of mcpbridge resource.

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #559 (f6f7b98) into main (792b9b0) will increase coverage by 0.17%.
The diff coverage is 6.25%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #559      +/-   ##
==========================================
+ Coverage   37.40%   37.57%   +0.17%     
==========================================
  Files          65       65              
  Lines        9176     9186      +10     
==========================================
+ Hits         3432     3452      +20     
+ Misses       5478     5468      -10     
  Partials      266      266              

Files Changed	Coverage Δ
pkg/ingress/config/kingress_config.go	17.31% <0.00%> (ø)
pkg/ingress/config/ingress_config.go	14.12% <6.66%> (-0.13%)	⬇️

... and 1 file with indirect coverage changes