docs(js): Add docs for ignoreStaticAssets (#14608)

Author: chargome

docs/platforms/javascript/common/configuration/integrations/http.mdx

@@ -102,6 +102,13 @@ The callback function receives two arguments:
 - `urlPath`: The URL path of the incoming request, including the query string if available. For example: `/users?name=John`.
 - `request`: An object of type `IncomingMessage` containing the incoming request. You can use this to filter on properties like the request method or headers.
 
+### `ignoreStaticAssets`
+
+_Type: `boolean`_ (Defaults to `true`)
+
+If set to true, no spans will be captured for static assets like images, fonts, and other files.
+
+
 ### `trackIncomingRequestsAsSessions`
 
 _Type: `boolean`_ (Defaults to `true`)