feat: Query readings without pagination offset

[weichou1229]

Query readings without pagination offset to prevent large dataset query and count.

Signed-off-by: bruce weichou1229@gmail.com
(cherry picked from commit 1a89671151ac64faeeb06f70b556460da8f76616)

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PR Checklist

Please check if your PR fulfills the following requirements:

• I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• I am not introducing a new dependency (add notes below if you are)
• I have added unit tests for the new feature or bug fix (if not, why?) not impact
• I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• I have opened a PR for the related docs change (if not, why?) not impact

Testing Instructions

Run core service and query reading without offset, the core data will not use SQL count and offset to prevent performance issue.

New Dependency Instructions (If applicable)

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 38.70968% with 38 lines in your changes missing coverage. Please review.

Project coverage is 28.15%. Comparing base (19dbf70) to head (ccee771).

Files with missing lines	Patch %	Lines
internal/core/data/application/reading.go	29.62%	34 Missing and 4 partials ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5057      +/-   ##
==========================================
+ Coverage   28.03%   28.15%   +0.11%     
==========================================
  Files         256      256              
  Lines       18520    18536      +16     
==========================================
+ Hits         5193     5218      +25     
+ Misses      12129    12097      -32     
- Partials     1198     1221      +23     

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[cloudxxx8]

LGTM