[PRE-LAUNCH] On some MacOS/xcode version install fails with an error

[mikekgfb]

This happens in our cloud runners. Does not affect most users, but only those that have certain versions of the Apple linker installed. Do we need to cover this in common problems?

Fixing this may not be a launch blocker, but being intentional about it probably is.

[mikekgfb]

solved for our tests #680

[mikekgfb]

Downgraded from launch blocker to a doc issue, since we can test in CI

[malfet]

If ET code crashes certain version of clang, ET cmake should check compiler version and error out if bad version is detected.

[mikekgfb]

Executorch issue / known issue with some compilers as per google search. Error occurs during build, mitigated by upgrading our CI