CONVERT ALREADY-VALID-UTF-8 REFUSAL ORACLE
Source: already_valid_utf8.csv
Exact bytes: 63 61 66 C3 A9 0D 0A
Meaning: UTF-8 "café" followed by CRLF.

Expected:
SOURCE_ENCODING: UTF-8
UNDEFINED_WINDOWS_1252_BYTE_OFFSET: NOT_RUN
MATERIALIZED_ENCODING: NOT_RUN
TRANSCODING: NOT_RUN
SOURCE_CHANGED: NO
OUTPUT_FILENAME: NONE
RESULT: REFUSED
DIAGNOSTIC_ID: DS-CVT-001
