Handle inlining a call instruction when it is inside of a try block.
- inTryCode is extended to return true when a callerCompiler has a try block
- inTryCode now returns the vector of control flow patches to add the exception
throwing instruction to, instead of the `TryControl`.
- When an exception is thrown in an inlined function without a handler in the
same function, we add it to a list (bodyRethrowPadPatches_) to be handled
at the end of compilation.
- The inline unhandled exceptions are joined together into a single block which
finishInlinedCallDirect links to the landing pad in the inline caller function.
- Driveby fix to not emit a 'catchable' call when a builtin method is infallible.
Depends on D224171
Differential Revision: https://phabricator.services.mozilla.com/D224172
b6101f3180