add sanity checks for importing bulk contacts, eg. when there is a truncated link

src/libs/crypto/vc/index.ts

@@ -124,7 +124,7 @@ function bytesToHex(b: Uint8Array): string {
 }
 
 // We should be calling 'verify' in more places, showing warnings if it fails.
-// @returns JWTDecoded with { header: JWTHeader, payload: string, signature: string, data: string } (but doesn't verify the signature)
+// @returns JWTDecoded with { header: JWTHeader, payload: any, signature: string, data: string } (but doesn't verify the signature)
 export function decodeEndorserJwt(jwt: string) {
   return didJwt.decodeJWT(jwt);
 }