[performance] cache FindAotCompiler task result

[rolfbjarne]

1. Do an incremental remote iOS build in a .NET MAUI template (change a small amount of .xaml)
2. Look at the .binlog

This task takes a decent amount of time:

And it is caculating a path:

Find out if we can:

• Cache the path for incremental builds
• Invalidate the cache if the .NET version changes, other settings, etc.