[Spring Cleanup] Refactor dcr endpoint to remove Spring dependency

[lashinijay]

Purpose

$subject

Related Issue

• Remove Spring dependencies from Identity Server applications wso2/product-is#21159

Reference PR

• [Spring Cleanup] Remove spring dependencies in DCR endpoint #2631

[codecov]

Codecov Report

Attention: Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 55.55%. Comparing base (fece352) to head (e3c1723).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
.../endpoint/factories/RegisterApiServiceFactory.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2679      +/-   ##
============================================
- Coverage     56.41%   55.55%   -0.87%     
- Complexity     8275     8285      +10     
============================================
  Files           632      631       -1     
  Lines         46803    48599    +1796     
  Branches       9044     9300     +256     
============================================
+ Hits          26402    26997     +595     
- Misses        16631    17720    +1089     
- Partials       3770     3882     +112     

Flag	Coverage Δ
unit	38.73% <60.00%> (-0.25%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.