[NAE-2449] ActionDelegate memory leak causes OOM

[renczesstefan]

Description

Refactor action handling logic and improve memory management in FieldActionsRunner and related classes.

Fixes NAE-2449

Dependencies

No new dependencies were introduced

Third party dependencies

No new dependencies were introduced

Blocking Pull requests

There are no dependencies on other PR

How Has Been This Tested?

This was tested manually and with unit tests.

Test Configuration

Name	Tested on
OS	macOS Tahoe 26.3
Runtime	Java 21
Dependency Manager	Maven 3.9.9n
Framework version	Spring Boot 3.4.4
Run parameters
Other configuration

Checklist:

• My code follows the style guidelines of this project
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• I have updated and synced my code with the target branch
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes:
  • Lint test
  • Unit tests
  • Integration tests
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  • Developer documentation
  • User Guides
  • Migration Guides

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