MOLD/FLAT on image values does not remove line breaks

[Oldes]

Current behaviour:

>> mold/flat make image! 8x1
== {make image! [8x1 #{
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
}]}

Expected result (like in Red):

>> mold/flat make image! 8x1
== {make image! [8x1 #{FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF}]}