Downstream `native-image` embedders are broken

[sgammon]

pkl/pkl-cli/pkl-cli.gradle.kts

Lines 87 to 88 in 258eda8

	// not required at runtime
	exclude("org/pkl/cli/svm/**")

This exclusion drops key classes from the pkl-cli JAR which are needed to build Pkl native binaries. While the comment is correct, these classes are inert for JVM use at runtime, embedders will Have A Bad Time if these classes are excluded from a native-image classpath downstream, when using the pkl-cli-* JAR.

These classes can be dropped from fat JARs, because shading with Truffle is only supported on JVM anyway.