Revert "Minor, move SpecialNames.isSafeIdentifier check a little earlier"

This reverts commit a3055edda9.

It turns out, this re-introduces an AssertionError at ClassId.<init> ("Class
name must not be root") when LazyJavaPackageScope#getContributedClassifier is
called during SAM constructor resolution below in
LazyJavaPackageScope#computeNonDeclaredFunctions, which was overlooked at the
time the commit was pushed

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/descriptors/JvmPackageScope.kt

@@ -25,7 +25,6 @@ import org.jetbrains.kotlin.incremental.record
 import org.jetbrains.kotlin.load.java.lazy.LazyJavaResolverContext
 import org.jetbrains.kotlin.load.java.structure.JavaPackage
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.name.SpecialNames
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.storage.getValue
@@ -48,8 +47,6 @@ class JvmPackageScope(
     }
 
     override fun getContributedClassifier(name: Name, location: LookupLocation): ClassifierDescriptor? {
-        if (!SpecialNames.isSafeIdentifier(name)) return null
-
         recordLookup(location, name)
 
         val javaClassifier = javaScope.getContributedClassifier(name, location)

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/lazy/descriptors/LazyJavaPackageScope.kt

@@ -30,6 +30,7 @@ import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryClass
 import org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.name.SpecialNames
 import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 import org.jetbrains.kotlin.storage.NullableLazyValue
 
@@ -102,17 +103,19 @@ class LazyJavaPackageScope(
         override fun hashCode() = name.hashCode()
     }
 
-    override fun getContributedClassifier(name: Name, location: LookupLocation): ClassDescriptor? {
+    override fun getContributedClassifier(name: Name, location: LookupLocation) = findClassifier(name, null)
+
+    private fun findClassifier(name: Name, javaClass: JavaClass?): ClassDescriptor? {
+        if (!SpecialNames.isSafeIdentifier(name)) return null
+
         val knownClassNamesInPackage = knownClassNamesInPackage()
-        if (knownClassNamesInPackage != null && name.asString() !in knownClassNamesInPackage) {
+        if (javaClass == null && knownClassNamesInPackage != null && name.asString() !in knownClassNamesInPackage) {
             return null
         }
 
-        return findClassifier(name, null)
+        return classes(FindClassRequest(name, javaClass))
     }
 
-    private fun findClassifier(name: Name, javaClass: JavaClass?): ClassDescriptor? = classes(FindClassRequest(name, javaClass))
-
     internal fun findClassifierByJavaClass(javaClass: JavaClass) = findClassifier(javaClass.name, javaClass)
 
     override fun getContributedVariables(name: Name, location: LookupLocation): Collection<PropertyDescriptor> = emptyList()