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/resolve/samConversions/runnable.fir.txt

@@ -1,6 +1,6 @@
 FILE: main.kt
     public final fun main(): R|kotlin/Unit| {
-        Q|JavaClass|.R|/JavaClass.foo|(<L> = foo@fun <anonymous>(): R|kotlin/Unit| <inline=NoInline>  {
+        Q|JavaClass|.R|/JavaClass.foo*s|(<L> = foo@fun <anonymous>(): R|kotlin/Unit| <inline=NoInline>  {
             String()
         }
         )