DOCS-12783 Add Govcloud availability warning banner to additional Deployment Gates pages (#33069)

* DOCS-12783 Add Govcloud availability warning banner to additional Deployment Gates pages

* Update content/en/deployment_gates/_index.md

Co-authored-by: Bryce Eadie <[email protected]>

* Update content/en/deployment_gates/explore.md

Co-authored-by: Bryce Eadie <[email protected]>

* Update content/en/deployment_gates/setup.md

Co-authored-by: Bryce Eadie <[email protected]>

---------

Co-authored-by: Bryce Eadie <[email protected]>

Author: jeff-morgan-dd

content/en/deployment_gates/_index.md

@@ -19,7 +19,7 @@ algolia:
 ---
 
 {{< site-region region="gov" >}}
-<div class="alert alert-danger">Deployment Gates are not available in the selected site ({{< region-param key="dd_site_name" >}}) at this time.</div>
+<div class="alert alert-danger">Deployment Gates are not available for the selected site ({{< region-param key="dd_site_name" >}}).</div>
 {{< /site-region >}}
 
 {{< callout url="http://datadoghq.com/product-preview/deployment-gates" >}}

content/en/deployment_gates/explore.md

@@ -7,6 +7,10 @@ further_reading:
   text: "Set up Deployment Gates"
 ---
 
+{{< site-region region="gov" >}}
+<div class="alert alert-danger">Deployment Gates are not available for the selected site ({{< region-param key="dd_site_name" >}}).</div>
+{{< /site-region >}}
+
 {{< callout url="http://datadoghq.com/product-preview/deployment-gates" >}}
 Deployment Gates are in Preview. If you're interested in this feature, complete the form to request access.
 {{< /callout >}}

content/en/deployment_gates/setup.md

@@ -7,6 +7,10 @@ further_reading:
   text: "Learn about the Deployment Gates explorer"
 ---
 
+{{< site-region region="gov" >}}
+<div class="alert alert-danger">Deployment Gates are not available for the selected site ({{< region-param key="dd_site_name" >}}).</div>
+{{< /site-region >}}
+
 {{< callout url="http://datadoghq.com/product-preview/deployment-gates" >}}
 Deployment Gates are in Preview. If you're interested in this feature, complete the form to request access.
 {{< /callout >}}