There are not many uses of wasmTextToBinary in the non-JS shell tests, and so
the easiest path to resolving the build size regression from using the 'wat'
crate is to just conditionally compile it in the JS shell. This commit takes
the few cases of wasmTextToBinary in non-JS shell tests and precompiles them
to binary.
Differential Revision: https://phabricator.services.mozilla.com/D68651
--HG--
extra : moz-landing-system : lando
