Update PA docs to reference all feature flags and describe the stack
What does this MR do and why?
This MR Updates the Product Analytics documentation to reference all the feature flags in use and describe in a bit more detail which stack is being used.
Screenshots or screen recordings
N/A
How to set up and validate locally
N/A
MR acceptance checklist
This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.
-
I have evaluated the MR acceptance checklist for this MR.
Related to #387943 (closed) and #383625 (closed)