Y25-283: Refactoring Limber configuration loading process

[dasunpubudumal]

Closes #

Changes proposed in this pull request

Instructions for Reviewers

[All PRs] - Confirm PR template filled
[Feature Branches] - Review code
[Production Merges to main]
    - Check story numbers included
    - Check for debug code
    - Check version

[codecov]

Codecov Report

❌ Patch coverage is 96.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 84.26%. Comparing base (d600507) to head (03c14af).
⚠️ Report is 5 commits behind head on develop.

Files with missing lines	Patch %	Lines
app/models/labware_creators/merged_plate.rb	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2520   +/-   ##
========================================
  Coverage    84.25%   84.26%           
========================================
  Files          499      499           
  Lines        20196    20195    -1     
  Branches       377      377           
========================================
+ Hits         17016    17017    +1     
+ Misses        3177     3175    -2     
  Partials         3        3           

Flag	Coverage Δ
javascript	79.85% <ø> (ø)
pull_request	84.26% <96.00%> (?)
push	84.26% <96.00%> (+<0.01%)	⬆️
ruby	91.75% <96.00%> (+0.02%)	⬆️

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