[chore][confighttp] Move MetricsLevel check to MeterProvider creation

[mx-psi]

Description

Drops otelhttp metrics depending of level with a view instead of passing a noop MeterProvider

I am not sure if this would have a performance impact or not. Checked with Damien, this should not have any visible impact.

Link to tracking issue

Updates #11061

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.73%. Comparing base (e87797c) to head (850c762).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12126      +/-   ##
==========================================
+ Coverage   91.71%   91.73%   +0.02%     
==========================================
  Files         463      463              
  Lines       24803    24830      +27     
==========================================
+ Hits        22749    22779      +30     
+ Misses       1672     1670       -2     
+ Partials      382      381       -1     

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[jade-guiton-dd]

Note: configgrpc has nearly identical code and will need to be updated similarly to remove the reference to TelemetrySettings.MetricsLevel

[bogdandrutu]

@mx-psi need a rebase

[mx-psi]

Note: configgrpc has nearly identical code and will need to be updated similarly to remove the reference to TelemetrySettings.MetricsLevel

PTAL at #12158 :)