cherry-pick #6997 to 1.62.x release branch

[arvindbr8]

RELEASE NOTES:

• xdsclient: lookup VirtualHost config from RDS response using the dataplane authority from the dial target instead of using LDS resource name

[codecov]

Codecov Report

Merging #7018 (1e7a128) into v1.62.x (7c4b553) will increase coverage by 0.10%.
The diff coverage is 80.00%.

Additional details and impacted files

@@             Coverage Diff             @@
##           v1.62.x    #7018      +/-   ##
===========================================
+ Coverage    82.28%   82.39%   +0.10%     
===========================================
  Files          296      296              
  Lines        31452    31449       -3     
===========================================
+ Hits         25879    25911      +32     
+ Misses        4505     4476      -29     
+ Partials      1068     1062       -6     

Files	Coverage Δ
clientconn.go	92.89% <ø> (+1.79%)	⬆️
resolver/resolver.go	94.44% <ø> (ø)
resolver_wrapper.go	85.18% <100.00%> (+0.13%)	⬆️
xds/internal/resolver/xds_resolver.go	79.61% <75.00%> (+0.68%)	⬆️

... and 16 files with indirect coverage changes