feat: [GeminiDataAnalytics] add ClarificationMessage, thought-signature, formatted-data (#8891)

* feat: add ClarificationMessage, thought-signature, formatted-data
docs: A comment for enum value THOUGHT in enum TextType is changed

PiperOrigin-RevId: 863524449

Source-Link: googleapis/googleapis@c0fcb35

Source-Link: googleapis/googleapis-gen@e29e2bd
Copy-Tag: eyJwIjoiR2VtaW5pRGF0YUFuYWx5dGljcy8uT3dsQm90LnlhbWwiLCJoIjoiZTI5ZTJiZDFmYmE1ZDhiMjNhNjZmODFjN2FkYjYzMTY2NTM0MjA5MyJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

GeminiDataAnalytics/metadata/V1Beta/DataChatService.php

@@ -31,6 +31,13 @@
 
 /**
  * Lists information about the supported locations for this service.
+This method can be called in two ways:
+
+*   **List all public locations:** Use the path `GET /v1/locations`.
+*   **List project-visible locations:** Use the path
+`GET /v1/projects/{project_id}/locations`. This may include public
+locations as well as private or other locations specifically visible
+to the project.
  *
  * This sample has been automatically generated and should be regarded as a code
  * template only. It will require modifications to work:

GeminiDataAnalytics/samples/V1beta/DataAgentServiceClient/list_locations.php

@@ -31,6 +31,13 @@
 
 /**
  * Lists information about the supported locations for this service.
+This method can be called in two ways:
+
+*   **List all public locations:** Use the path `GET /v1/locations`.
+*   **List project-visible locations:** Use the path
+`GET /v1/projects/{project_id}/locations`. This may include public
+locations as well as private or other locations specifically visible
+to the project.
  *
  * This sample has been automatically generated and should be regarded as a code
  * template only. It will require modifications to work: