`one or more warnings were emitted` warning message

When building with the Rust client, the `one or more warnings were emitted` warning consistently appears when compiling MASM. This warning message is from the Miden-VM repository here: https://github.com/0xMiden/miden-vm/blob/53b16751a45d4e05aee627efac0ddaa203dfa33c/assembly-syntax/src/sema/errors.rs#L33

The error appears to be printed using the standard `Display`, which only shows the top-level message and omits the detailed source errors. It seems that the `miette` diagnostics from the VM repo are not being emitted by the Rust client which means users can't see the detailed warning messages.

CC-ing @plafer