[Analysis API] Add more ContextCollector tests inspired by on-air tests

As the on-air analysis is obsolete, related tests are going to be
deleted. Here we add cases not yet covered by 'ContextCollector' tests.

analysis/low-level-api-fir/testData/contextCollector/enumValueFunction.kt

@@ -0,0 +1,5 @@
+enum class Foo {
+    VALUE {
+        <expr>fun run() = 1</expr>
+    }
+}