invalid alignment test should be re-enabled once alignment is checked for

[pchickey]

See eb82375a44ec866ab1e01f5fc86145f7a32963de

bytecodealliance/wit-bindgen#355

[vados-cosmonic]

If we still do this, we should make sure to add happy and sad path tests for type conversions as well. See this comment:

#22 (comment)