Could we have spotted the missing `jvmti` support in JDK19 on non-x64/aarch64 platforms?

Under some of the testing performed during the release cycle for JDK19 we discovered that the `--enable-preview` option resulted in `jvmti` support not being available on certain platforms (Notably the ones where a full Virtual Threads implementation was not available - everything except the x86-64 and aarch64 platforms).

Could we have pre-emptively caught this as part of the regular test cycles in order to avoid hitting the problem during the release cycle, and if not is there anything we could put in place to get early warning of such a problem in the future?

Start by reviewing the regular release test cycles and platform coverage described in the issue, focusing on --enable-preview and JVMTI behavior outside x86-64 and aarch64. Determine whether an existing test can expose the missing support earlier; done means the regression is detected before the release cycle.

Written by the indexing model from the issue text.