refactor(ocpp2): convert incoming request fire-and-forget patterns to event listeners...

refactor(ocpp2): convert incoming request fire-and-forget patterns to event listeners (#1715)

* refactor(ocpp2): convert UpdateFirmware fire-and-forget to event listener

* refactor(ocpp2): convert GetLog fire-and-forget to event listener

* refactor(ocpp2): convert CustomerInformation fire-and-forget to event listener

* refactor(ocpp2): convert TriggerMessage fire-and-forget to event listener

* [autofix.ci] apply automated fixes

* test(ocpp2): improve TRIGGER_MESSAGE listener test coverage for SonarCloud

* test(ocpp2): remove 10 redundant handler tests that add no branch coverage

* test(ocpp2): remove 5 project-wide redundant tests identified by cross-validated audit

* refactor(ocpp2): extract StatusNotification trigger methods to reduce cognitive complexity

* [autofix.ci] apply automated fixes

* test(ocpp2): strengthen StatusNotification trigger assertions with payload and options validation

* [autofix.ci] apply automated fixes

* fix(ocpp2): relocate B11.FR.01 spec reference to correct surviving test

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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>