Remove preview-specific wording from field descriptions

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: marcmlc

descriptions/0/api.intercom.io.yaml

@@ -27331,8 +27331,8 @@ components:
         users:
           type: array
           nullable: true
-          description: The users that were tagged or untagged. Only present on preview
-            API versions when tagging or untagging users.
+          description: The users that were tagged or untagged. Present when tagging
+            or untagging users via POST /tags.
           items:
             type: object
             properties:
@@ -27348,8 +27348,8 @@ components:
         companies:
           type: array
           nullable: true
-          description: The companies that were tagged or untagged. Only present on
-            preview API versions when tagging or untagging companies.
+          description: The companies that were tagged or untagged. Present when tagging
+            or untagging companies via POST /tags.
           items:
             type: object
             properties: