Extend time-series eventType meta:enum for AJO web-channel inbound use cases

## What are the schemas that are affected by the issue
components/behaviors/time-series.schema.json

## What are examples of products that are impacted by the issue
Adobe Experience Platform
Adobe Analytics
Adobe Target

Open components/behaviors/time-series.schema.json and inspect the eventType meta:enum definition. Compare its current values with the AJO web-channel inbound use cases and the listed impacted products; done means the required inbound event types are represented in the enum, though the issue does not specify which values to add.

Written by the indexing model from the issue text.