2.2.9

What's Changed

• [OPIK-7499] [BE] fix: build parseable JSONPaths for dictionary filter keys by @thiagohora in #7626
• [NA] test: fix Ollie explain E2E test flakiness in production by @natagh23 in #7646
• [OPIK-7476] [FE] feat: A/B test guided mobile onboarding flow by @aswynz in #7597
• [NA] [BE] [DOCS] feat: ClickHouse async-insert tuning knobs + TOO_MANY_PARTS recovery runbook by @andrescrz in #7629

Full Changelog: 2.2.8...2.2.9