feat(replay): document user.geo search props (#13645)

Depends on getsentry/sentry#91315
Ref
- getsentry/team-replay#566

---------

Co-authored-by: Michelle Zhang <[email protected]>
Co-authored-by: Alex Krawiec <[email protected]>

Author: 3 people

docs/concepts/search/searchable-properties/session-replay.mdx

@@ -275,6 +275,30 @@ An alternative, or addition, to the username. Sentry is aware of email addresses
 
 - **Type:** string
 
+### `user.geo.city`
+
+Full name of the city of the user's geolocation.
+
+- **Type:** string
+
+### `user.geo.country_code`
+
+Country of the user's geolocation. Country code is based on [ISO 3166-1](https://www.iso.org/iso-3166-country-codes.html).
+
+- **Type:** string
+
+### `user.geo.region`
+
+Full name of the country of the user's geolocation.
+
+- **Type:** string
+
+### `user.geo.subdivision`
+
+Full name of the subdivision of the user's geolocation. (For example, state, province, etc.)
+
+- **Type:** string
+
 ### `user.id`
 
 Application-specific internal identifier for the user.