Update irbuild-bytes.test

Author: BobTheBuidler

mypyc/test-data/irbuild-bytes.test

@@ -221,12 +221,13 @@ L3:
 [case testBytesJoinConstantFold]
 from typing import Final
 
+# TODO: this is not currently supported but probably should be
 constant: Final = b"constant"
 
 def fold_tuple() -> bytes:
-    return b" ".join((constant, b"folded"))
+    return b" ".join((b"constant", b"folded"))
 def fold_list() -> bytes:
-    return b" ".join([constant, b"folded"])
+    return b" ".join([b"constant", b"folded"])
 [out]
 def fold_tuple():
     r0 :: bytes