Build stubs for local functions; show them in Goto Symbol

#KT-14161 Fixed

compiler/frontend/src/org/jetbrains/kotlin/psi/stubs/KotlinStubVersions.kt

@@ -23,12 +23,12 @@ object KotlinStubVersions {
     // Though only kotlin declarations (no code in the bodies) are stubbed, please do increase this version
     //      if you are not 100% sure it can be avoided.
     // Increasing this version will lead to reindexing of all kotlin source files on the first IDE startup with the new version.
-    const val SOURCE_STUB_VERSION = 122
+    const val SOURCE_STUB_VERSION = 123
 
     // Binary stub version should be increased if stub format (org.jetbrains.kotlin.psi.stubs.impl) is changed
     //      or changes are made to the core stub building code (org.jetbrains.kotlin.idea.decompiler.stubBuilder).
     // Increasing this version will lead to reindexing of all binary files that are potentially kotlin binaries (including all class files).
-    private const val BINARY_STUB_VERSION = 59
+    private const val BINARY_STUB_VERSION = 60
 
     // Classfile stub version should be increased if changes are made to classfile stub building subsystem (org.jetbrains.kotlin.idea.decompiler.classFile)
     // Increasing this version will lead to reindexing of all classfiles.

compiler/frontend/src/org/jetbrains/kotlin/psi/stubs/elements/KtStubElementType.java

@@ -87,12 +87,9 @@ public abstract class KtStubElementType<StubT extends StubElement, PsiT extends
     @Override
     public boolean shouldCreateStub(ASTNode node) {
         PsiElement psi = node.getPsi();
-        if (psi instanceof KtClassOrObject) {
+        if (psi instanceof KtClassOrObject || psi instanceof KtFunction) {
             return true;
         }
-        if (psi instanceof KtFunction) {
-            return !((KtFunction) psi).isLocal();
-        }
         if (psi instanceof KtProperty) {
             return !((KtProperty) psi).isLocal();
         }