Exclude system apps in applications GET impl

[JeethJJ]

Introduce excludeSystemPortals API query param and following implementation.
Introduce systemPortals server level config and implementation to exclude the mentioned systemPortals in get applications api response.

Proposed changes in this pull request

1. Add a system_portals toml config to maintain the list of system portals to be excluded when listing Applications via the API.
2. Update DB queries for the following requirements.

• To get the count of applications excluding system portals.
• To retrieve application basic info excluding system portals.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 15 lines in your changes missing coverage. Please review.

Project coverage is 40.19%. Comparing base (ba952e5) to head (9ab5dad).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
...y/application/mgt/dao/impl/ApplicationDAOImpl.java	75.00%	6 Missing and 1 partial ⚠️
...n/mgt/dao/PaginatableFilterableApplicationDAO.java	0.00%	3 Missing ⚠️
...ication/mgt/ApplicationPaginationAndSearching.java	0.00%	2 Missing ⚠️
...cation/mgt/dao/impl/CacheBackedApplicationDAO.java	66.66%	2 Missing ⚠️
.../application/mgt/ApplicationManagementService.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #6026      +/-   ##
============================================
+ Coverage     40.12%   40.19%   +0.06%     
+ Complexity    14198    14187      -11     
============================================
  Files          1736     1738       +2     
  Lines        117216   116944     -272     
  Branches      20200    20126      -74     
============================================
- Hits          47035    47000      -35     
+ Misses        62938    62730     -208     
+ Partials       7243     7214      -29     

Flag	Coverage Δ
unit	23.97% <66.66%> (+0.01%)	⬆️

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[shanggeeth]

Let's run the PR builder before merging.

[janakamarasena]

Make sure to update the integration tests cover the new cases.

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/11367350879

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/11367350879
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/11367350879