[JVM IR] Use names of local functions in names of local classes.

This undoes changes in
https://github.com/JetBrains/kotlin/commit/fbe66c3496d082d2d487b2c39673f0cd4ac5b70a
which broke calculation of the simple name of local classes in
reflection (the enclosing method was not a substring of the name of the
local class).

compiler/testData/checkLocalVariablesTable/itInReturnedLambda.kt

@@ -6,6 +6,14 @@ fun foo() {
     }
 }
 
+// Names of local functions are used in names of local classes for IR, but only indices are used for non-IR.
+
+// JVM_TEMPLATES
 // METHOD : ItInReturnedLambdaKt$foo$1$1.invoke(I)V
 // VARIABLE : NAME=this TYPE=LItInReturnedLambdaKt$foo$1$1; INDEX=0
 // VARIABLE : NAME=it TYPE=I INDEX=1
+
+// JVM_IR_TEMPLATES
+// METHOD : ItInReturnedLambdaKt$foo$bar$1.invoke(I)V
+// VARIABLE : NAME=this TYPE=LItInReturnedLambdaKt$foo$bar$1; INDEX=0
+// VARIABLE : NAME=it TYPE=I INDEX=1