prompt: support case-insensitive sorting

Author: weikanglim

cli/azd/pkg/prompt/prompter.go

@@ -10,6 +10,7 @@ import (
 	"log"
 	"os"
 	"slices"
+	"sort"
 	"strconv"
 	"strings"
 
@@ -218,6 +219,10 @@ func (p *DefaultPrompter) getSubscriptionOptions(ctx context.Context) ([]string,
 		return nil, nil, nil, fmt.Errorf("listing accounts: %w", err)
 	}
 
+	sort.Slice(subscriptionInfos, func(i, j int) bool {
+		return strings.ToLower(subscriptionInfos[i].Name) < strings.ToLower(subscriptionInfos[j].Name)
+	})
+
 	// The default value is based on AZURE_SUBSCRIPTION_ID, falling back to whatever default subscription in
 	// set in azd's config.
 	defaultSubscriptionId := os.Getenv(environment.SubscriptionIdEnvVarName)