[cbor][rkpvm] Refactor CBOR Value to other type conversion

With the ciborium function Value::into_*.

Test: atest rialto_test
Bug: 313815907
Change-Id: I23873f76bfe9460b581081cb59ed221c5a1443a5
diff --git a/service_vm/comm/src/lib.rs b/service_vm/comm/src/lib.rs
index c9de540..343d48e 100644
--- a/service_vm/comm/src/lib.rs
+++ b/service_vm/comm/src/lib.rs
@@ -23,7 +23,7 @@
 mod message;
 mod vsock;
 
-pub use csr::{cbor_value_type, try_as_bytes, Csr, CsrPayload};
+pub use csr::{cbor_value_type, to_unexpected_item_error, value_to_bytes, Csr, CsrPayload};
 pub use message::{
     ClientVmAttestationParams, EcdsaP256KeyPair, GenerateCertificateRequestParams, Request,
     RequestProcessingError, Response, ServiceVmRequest,