The first test crashes in AST, and fails in bytecode, so the best thing
which we can do here without complicated test setup logic is to just
skip this test for now. Interestinglny, this crashing test is very
similar to the existing thenable test case, and only differs in the way
that the thenable is given to the async function.
The next two tests are effectively the same as the above two mentioned
tests, with the only different being that the thenable calls the fulfill
function. For the test case that crashes in AST mode, doing that appears
to fix the test case for AST mode (but both still fail in bytecode).
In static init blocks 'await' cannot be used. Note that this does not
cover all the cases since the parser currently cannot distinguish
between expressions within parenthesis and direct expressions.
