K2: render additionally *s for static references

This commit allows to distinguish static VS non-static things
inside FIR_DUMP, e.g. static synthetic Enum.entries with
enum entry Enum.entries

compiler/fir/analysis-tests/testData/resolveWithStdlib/javaEnumSynthetic.fir.txt

@@ -1,5 +1,5 @@
 FILE: main.kt
     public final fun foo(): R|kotlin/Unit| {
-        Q|JavaEnum|.R|/JavaEnum.values|()
-        Q|JavaEnum|.R|/JavaEnum.valueOf|(String())
+        Q|JavaEnum|.R|/JavaEnum.values*s|()
+        Q|JavaEnum|.R|/JavaEnum.valueOf*s|(String())
     }