Improve ABI version error reporting in the compiler

- only report ABI errors if there's at least one other error
- append additional helpful information to the "unresolved reference" error

compiler/testData/cli/jvm/wrongAbiVersion.kt

@@ -1,5 +1,7 @@
 import wrong.*
 
 fun foo(x: ClassWithWrongAbiVersion) {
-  bar()
-}
+    bar()
+
+    1.set(2, 3)
+}