Make new monitoring config to be disabled by default

[Chengxuan]

Proposed changes

Fixes issue discussed in https://discord.com/channels/905194001349627914/1351566571050504222/1351611062910451742

Switch logic to direct access to the config.Sections to ensure access to the loaded configuration data are not lost

We later found that's not the case^^

So the bug is the logic was unable to determine whether the YAML has opted into the new monitoring configuration or not because it's enabled by default. Therefore, the logic ignored the old metrics configuration altogether.

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Types of changes

• Bug fix
• New feature added
• Documentation Update

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Please make sure to follow these points

• I have read the contributing guidelines.
• I have performed a self-review of my own code or work.
• [na] I have commented my code, particularly in hard-to-understand areas.
• My changes generates no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• My changes have sufficient code coverage (unit, integration, e2e tests).

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Screenshots (If Applicable)

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Other Information

Any message for the reviewer or kick off the discussion by explaining why you considered this particular solution, any alternatives etc.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.95%. Comparing base (71f04f3) to head (ab2a544).
Report is 6 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1667   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         339      339           
  Lines       29780    29782    +2     
=======================================
+ Hits        29768    29770    +2     
  Misses          8        8           
  Partials        4        4           

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[Chengxuan]

I kept the refactor of the if else logic as I found that even though it's more lines, they are easier to read.

[EnriqueL8]

Thanks @Chengxuan