[FR]: Exclude transitioned targets

[alexeagle]

What is the current behavior?

If a library target is transitioned to a different target platform, the aspect will visit the library more than once.

For example,

cc_binary(a)
embedded_target(e1, apps = [a])
embedded_target(e2, apps = [a])

context: https://bazelbuild.slack.com/archives/CA31HN1T3/p1728485100416379?thread_ts=1728325365.388799&cid=CA31HN1T3

Describe the feature

Some way to prevent propagating the aspect across transition boundaries is probably the desired fix.