Experiments: Graduate data warehouse integration out of beta

[danielbachhuber]

• Figure out how many customers have used the data warehouse integration thus far
• Figure out how many customers are using data warehouse
• Figure out how many customers using experiments would be good candidates to use data warehouse integration
• Update experiment launched, shared metric created, and shared metric assigned events to indicate whether a data warehouse metric was used
• Support all internal and test user filters for data warehouse Trends queries #27012
• Support for using a data warehouse table inside of a Funnels experiment #27009
• Easy experiments support for Chargebee or Stripe data warehouse tables #26954
• Support each of the person on events modes for data warehouse
• Support custom exposure events for data warehouse metrics #27542
• Remove beta tag from the docs

[danielbachhuber]

Some research in https://posthog.slack.com/archives/C07PXH2GTGV/p1736889580795729

I think the first step is to ensure the customers who are already using experiments + data warehouse can use both together as appropriate:

• Ask if they're aware of the functionality. If so, any questions or feedback.
• See if their data is appropriate for an experiment.