Fix/add experiment refactor#38252

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ash6898 wants to merge 3 commits intoapache:masterfrom

ash6898:fix/add-experiment-refactor

Commits on Apr 18, 2026

Use add_experiment() instead of experiments.append() in Python
ash6898
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Commits on Apr 21, 2026

Use ExperimentalOptions.addExperiment() instead of get/set pattern in Java
ash6898
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Commits on Apr 22, 2026

Fix upload_graph condition regression and formatting issues
ash6898
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