Use BackendTLSPolicy name

Author: tataruty

internal/controller/state/graph/backend_refs.go

@@ -420,7 +420,7 @@ func findBackendTLSPolicyForService(
 		beTLSPolicy.IsReferenced = true
 		if !beTLSPolicy.Valid {
 			//nolint:staticcheck // Capitalization required for alignment with other messages.
-			err = fmt.Errorf("The backend TLS policy is invalid: %s", beTLSPolicy.Conditions[0].Message)
+			err = fmt.Errorf("The BackendTLSPolicy is invalid: %s", beTLSPolicy.Conditions[0].Message)
 		} else {
 			beTLSPolicy.Conditions = append(beTLSPolicy.Conditions, conditions.NewPolicyAccepted())
 		}

internal/controller/state/graph/backend_refs_test.go

@@ -1573,7 +1573,7 @@ func TestCreateBackend(t *testing.T) {
 			expectedServicePortReference: "",
 			expectedConditions: []conditions.Condition{
 				conditions.NewRouteBackendRefUnsupportedValue(
-					"The backend TLS policy is invalid: Unsupported value",
+					"The BackendTLSPolicy is invalid: Unsupported value",
 				),
 			},
 			name: "invalid policy",