du `-b` behavior doesn't match GNU du

[spholz]

For GNU coreutils, the order of arguments matters in du:

$ du -m -sb Base
23507402	Base
$ du -sb -m Base
23	Base

-b means both --apparent-size and --block-size=1. If -b is before -m (--block-size=1M), the size is printed in megabytes.

uutils du ignores the order and always prints the size in bytes:

$ ~/repos/uutils-coreutils/target/debug/coreutils du -m -sb Base/
23507402	Base/
$ ~/repos/uutils-coreutils/target/debug/coreutils du -sb -m Base/
23507402	Base/

SerenityOS currently needs a workaround for this (see SerenityOS/serenity#26120 and SerenityOS/serenity#26121).
We can't use --apparent-size everywhere since BusyBox only supports short arguments, so only -b, which is described as:
-b Apparent size (including holes)
For BusyBox this argument doesn't even mean --block-size=1.

[ChrisDryden]

These are some of the flags that use position based overrides, and that initial PR added the logic for some of the flags but it appears we're still missing:

-h
--si
-b
-k
-m
--block-size