Adds limitation in Load Balancing Custom Rules (#19172)

Author: angelampcosta

src/content/docs/load-balancing/additional-options/load-balancing-rules/index.mdx

@@ -28,3 +28,5 @@ By default, non-Enterprise customers have **one** Load Balancing rule **per load
 ## Limitations
 
 At the moment, you cannot use Load Balancing rules with [Cloudflare Spectrum](/spectrum/about/load-balancer/).
+
+Custom load balancing rules are incompatible with [Geo steering](/load-balancing/understand-basics/traffic-steering/steering-policies/geo-steering/). As a result, any custom rule applied to Geo-steered load balancers will not function as expected.

src/content/docs/load-balancing/understand-basics/traffic-steering/steering-policies/geo-steering.mdx

@@ -14,6 +14,10 @@ import { TabItem, Tabs } from "~/components";
 
 This option is extremely useful when you want site visitors to access the endpoint closest to them, which improves page-loading performance.
 
+:::note
+Custom load balancing rules are incompatible with Geo steering. As a result, any custom rule applied to Geo-steered Load Balancers will not function as expected.
+:::
+
 ## Pool assignment
 
 You can assign multiple pools to the same area and the load balancer will use them in failover order. Any options not explicitly defined — whether in data centers, countries, or regions — will fall back to using default pools and failover.