test(e2e): OCPBUGS-98387: align Available condition timeout with waitTimeout

Increase the HostedCluster Available condition timeout from 30m to 45m
to match the overall waitTimeout already used for version rollout. Azure
VM-to-node registration regularly exceeds 30 minutes when 6 clusters
are created in parallel, causing premature timeouts in the self-managed
e2e presubmit.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: bryan-cox

test/e2e/v2/cmd/create-guests/main.go

@@ -179,7 +179,7 @@ func run(ctx context.Context, cfg envConfig) error {
 
 	// Phase 3: Watch for Available condition on all clusters.
 	log.Println("Phase 3: Waiting for all clusters to become Available")
-	availableErrors := waitForClustersAvailable(ctx, mgmtClient, cfg.namespace, named, 30*time.Minute)
+	availableErrors := waitForClustersAvailable(ctx, mgmtClient, cfg.namespace, named, 45*time.Minute)
 	for _, ns := range named {
 		if err := availableErrors[ns.Variant]; err != nil {
 			log.Printf("ERROR: cluster %s (%s) did not become Available: %v", ns.name, ns.Variant, err)