[25.x] [Copilot] Specify chat regions (#2681)

#### Summary
List specific application families to use for the chat capability.

#### Work Item(s)
Fixes
[AB#502565](https://dynamicssmb2.visualstudio.com/1fcb79e7-ab07-432a-a3c6-6cf5a88ba4a5/_workitems/edit/502565)

src/System Application/App/AI/src/Copilot/CopilotCapabilityInstall.Codeunit.al

@@ -5,7 +5,6 @@
 namespace System.AI;
 
 using System.Environment;
-using System;
 
 codeunit 7760 "Copilot Capability Install"
 {
@@ -25,13 +24,10 @@ codeunit 7760 "Copilot Capability Install"
     internal procedure RegisterCapabilities()
     var
         EnvironmentInformation: Codeunit "Environment Information";
-        WithinEUDB: Boolean;
         ApplicationFamily: Text;
     begin
         ApplicationFamily := EnvironmentInformation.GetApplicationFamily();
-        if TryGetIsWithinEUDB(WithinEUDB) then;
-
-        if ApplicationFamily in ['US', 'MX'] or WithinEUDB then
+        if ApplicationFamily in ['AT', 'BE', 'BG', 'CH', 'CZ', 'DK', 'EE', 'ES', 'FI', 'GR', 'HR', 'HU', 'IE', 'IS', 'IT', 'LT', 'LV', 'MX', 'NL', 'PL', 'PT', 'RO', 'RS', 'SE', 'SI', 'SK', 'UA', 'US', 'W1'] then
             RegisterSaaSCapability(Enum::"Copilot Capability"::Chat, Enum::"Copilot Availability"::Preview, ChatLearnMoreLbl);
 
         RegisterSaaSCapability(Enum::"Copilot Capability"::"Analyze List", Enum::"Copilot Availability"::Preview, AnalyzeListLearnMoreLbl);
@@ -47,14 +43,6 @@ codeunit 7760 "Copilot Capability Install"
                 CopilotCapability.RegisterCapability(Capability, Availability, LearnMoreUrl);
     end;
 
-    [TryFunction]
-    local procedure TryGetIsWithinEUDB(var WithinEUDB: Boolean)
-    var
-        ALCopilotFunctions: DotNet ALCopilotFunctions;
-    begin
-        WithinEUDB := ALCopilotFunctions.IsWithinEUDB();
-    end;
-
     [EventSubscriber(ObjectType::Page, Page::"Copilot AI Capabilities", 'OnRegisterCopilotCapability', '', false, false)]
     local procedure OnRegisterCopilotCapability()
     begin