Incorrect xsd:anyURI check according to specification (simple file name issue)

[hoijnet]

Describe the bug
The xsd:anyURI check is incorrect according to specification. It fails when adding a simple file name such as helloworld.xsd.

Also consult ietf.org/rfc/rfc3987.txt.

Instead, it should accept zero or more characters as per the IRI as specified in anyURI but with the extended character set of IRI.

To Reproduce
Steps to reproduce the behavior:

1. Create a type with a property of "xsd:anyURI"
2. Add instance document with property value "helloworld.xsd"
3. See error message as in screenshot

Expected behavior
The expectation is that a bare filename without schema should be possible to use as anyURI value.

Screenshots

{
  "name": "Server request error",
  "message": "Schema check failure",
  "data": {
    "@type": "api:InsertDocumentErrorResponse",
    "api:error": {
      "@type": "api:SchemaCheckFailure",
      "api:witnesses": [
        {
          "terminusdb:///schema#BaseInformation": [
            {
              "terminusdb:///schema#SchemaLocation": {
                "@type": "could_not_interpret_as_type",
                "type": "http://www.w3.org/2001/XMLSchema#anyURI",
                "value": "helloWorld.xsd"
              }
            }
          ]
        }
      ]
    },
    "api:message": "Schema check failure",
    "api:status": "api:failure"
  }
}

Info (please complete the following information):

• OS: DFRNT

Additional context
N/A