[jaspLearnStats] Change default value of delta to 0.5 in Effect Sizes within Learn S...

[sisyphus-jasp]

Summary

Issue: https://github.com/jasp-stats/INTERNAL-jasp/issues/3107

Summary

Issue: Change default value of delta to 0.5 in Effect Sizes within Learn Stats module.

Root Cause: The QML file inst/qml/LSeffectSizes.qml had the default value for Cohen's delta set to 0 instead of a more useful value like 0.5.

Changes Made:

• Modified inst/qml/LSeffectSizes.qml line 65: Changed defaultValue: 0 to defaultValue: 0.5 for the effectSizeValueDelta DoubleField.

Test Status:

• No unit tests exist for this module, so testAll() returned "No tests were found."
• This is a purely QML UI change that only affects the default value shown in the interface, not any computation logic.

Implementation Plan

No plan provided by agent.

Test Results

Test Run	Result
Baseline (pre-fix)	Could not parse test summary
Post-fix	Could not parse test summary
Upstream CI	dcade49 -- CI: passing