test(agama): add transpiler control-flow codegen conformance tests

[imran-ishaq]

Prepare

• Read PR guidelines
• Read license information

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Description

Adds ControlFlowTest to the Agama transpiler module. It transpiles a flow using When/Otherwise, Match, Repeat
(with Quit When) and Iterate, and asserts the generated JavaScript contains the expected control structures (if/else,
equality match branches, counted loop, iteration loop, loop break). Registered in the module's TestNG suite. No
production change — confirms current code generation conforms to the language reference.

Target issue

The Agama transpiler's control-flow constructs (When/Otherwise, Match, Repeat/Quit When, Iterate) are exercised by
syntax-only pass tests, but nothing asserts that they generate the expected JavaScript control structures, so a
code-generation regression could go unnoticed.

closes #14426

Implementation Details

• New test agama/transpiler/src/test/java/io/jans/agama/test/ControlFlowTest.java using Transpiler.transpile and asserting
  on the generated code.
• Registered the class in agama/transpiler/src/test/resources/testng.xml.
• Full transpiler suite passes (3 tests, 0 failures on this branch's base).

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Test and Document the changes

• Static code analysis has been run locally and issues have been fixed
• Relevant unit and integration tests have been added/updated
• Relevant documentation has been updated if any (i.e. user guides, installation and configuration guides, technical design docs etc)

Please check the below before submitting your PR. The PR will not be merged if there are no commits that start with docs: to indicate documentation changes or if the below checklist is not selected.

• I confirm that there is no impact on the docs due to the code changes in this PR.

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• Commit unit tests in branch agama-transpiler-control-flow-tests

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[mo-auto]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues

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[sonarqubecloud]

Quality Gate passed for 'agama parent'

Issues
0 New issues
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