Improve authenticator management

[Thisara-Welmilla]

Issue:

• Improve all local authenticator retrieval methods product-is#22276

With custom authentication extension feature, there will be two type of local authenticators, system defined local authenticators and user defined local authenticator. The current existing method for retrieving all local authenticators only consider system defined local authenticators and not returning returning user defined authenticators.
The code logic of those methods cannot be updated to retrieve the user defined local authenticators as well, as it required tenant domain, but those methods does not get tenant domain as parameter. Therefore, those methods will be depreciated and introduce new methods to retrieve both system and local authenticators.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 8 lines in your changes missing coverage. Please review.

Please upload report for BASE (master@6640eab). Learn more about missing BASE report.
Report is 7 commits behind head on master.

Files with missing lines	Patch %	Lines
...cation/common/ApplicationAuthenticatorService.java	0.00%	4 Missing ⚠️
...lication/mgt/ApplicationManagementServiceImpl.java	40.00%	3 Missing ⚠️
.../openjdk/nashorn/JsOpenJdkNashornGraphBuilder.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #6290   +/-   ##
=========================================
  Coverage          ?   45.90%           
  Complexity        ?    14252           
=========================================
  Files             ?     1655           
  Lines             ?   101268           
  Branches          ?    17576           
=========================================
  Hits              ?    46491           
  Misses            ?    48055           
  Partials          ?     6722           

Flag	Coverage Δ
unit	28.95% <33.33%> (?)

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[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/12807052934

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/12807052934
Status: failure

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/12830224952

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/12830224952
Status: failure

[malithie]

At a given point of time looks like this won't return all system defined authenticators. This is because system defined authenticators are provided an input to the service.
This is fine for the moment as that is how this service is defined

[Thisara-Welmilla]

The Sonar reporting following issues, which are false positive.

1. Line duplication of for (LocalAuthenticatorConfig localAuthenticatorConfig : getLocalAuthenticatorConfigsList()) {. This cannot be removed.
2. Reminder to remove depreciated methods.

[sonarqubecloud]

Quality Gate failed

Failed conditions
4.1% Duplication on New Code (required ≤ 3%)
B Maintainability Rating on New Code (required ≥ A)

See analysis details on SonarQube Cloud

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