docs: change from detecting version to since tag (#13127)

* update everything from version to since

* update events

* regenerate oas

www/apps/api-reference/specs/admin/paths/admin_draft-orders_{id}.yaml

@@ -199,4 +199,4 @@ delete:
       $ref: ../components/responses/500_error.yaml
   x-workflow: deleteDraftOrdersWorkflow
   x-events: []
-  x-version: 2.8.4
+  x-since: 2.8.4

www/apps/api-reference/specs/admin/paths/admin_order-edits_{id}.yaml

@@ -75,4 +75,4 @@ delete:
         ```
       description: Emitted when an order edit request is canceled.
       deprecated: false
-      version: 2.8.0
+      since: 2.8.0

www/apps/api-reference/specs/admin/paths/admin_order-edits_{id}_confirm.yaml

@@ -56,4 +56,4 @@ post:
         ```
       description: Emitted when an order edit request is confirmed.
       deprecated: false
-      version: 2.8.0
+      since: 2.8.0

www/apps/api-reference/specs/admin/paths/admin_order-edits_{id}_request.yaml

@@ -56,4 +56,4 @@ post:
         ```
       description: Emitted when an order edit is requested.
       deprecated: false
-      version: 2.8.0
+      since: 2.8.0

www/apps/api-reference/specs/admin/paths/admin_products_imports.yaml

@@ -47,4 +47,4 @@ post:
       $ref: ../components/responses/500_error.yaml
   x-workflow: importProductsAsChunksWorkflow
   x-events: []
-  x-version: 2.8.5
+  x-since: 2.8.5

www/apps/api-reference/specs/admin/paths/admin_products_imports_{transaction_id}_confirm.yaml

@@ -44,4 +44,4 @@ post:
       $ref: ../components/responses/invalid_request_error.yaml
     '500':
       $ref: ../components/responses/500_error.yaml
-  x-version: 2.8.5
+  x-since: 2.8.5

www/apps/api-reference/specs/admin/paths/admin_tax-providers.yaml

@@ -192,4 +192,4 @@ get:
       $ref: ../components/responses/invalid_request_error.yaml
     '500':
       $ref: ../components/responses/500_error.yaml
-  x-version: 2.8.0
+  x-since: 2.8.0