fixup! WIP speculative access optimization with "simple name -> class ID" index

compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirPackageMemberScope.kt

diff --git a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirPackageMemberScope.kt b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirPackageMemberScope.kt
index 00d674a..ef9f66e 100644
--- a/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirPackageMemberScope.kt
+++ b/compiler/fir/providers/src/org/jetbrains/kotlin/fir/scopes/impl/FirPackageMemberScope.kt
@@ -41,8 +41,14 @@
         if (name in excludedNames) return
 
         val symbol = classifierCache.getOrPut(name) {
-            val unambiguousFqName = ClassId(fqName, name)
-            symbolProvider.getClassLikeSymbolByClassId(unambiguousFqName)
+            val unambiguousClassId = ClassId(fqName, name)
+
+            val possibleClassIds = symbolProvider.symbolNamesProvider.getTopLevelClassIdsByShortName(name)
+            if (possibleClassIds != null && unambiguousClassId !in possibleClassIds) {
+                return@getOrPut null
+            }
+
+            symbolProvider.getClassLikeSymbolByClassId(unambiguousClassId)
         }
 
         if (symbol != null) {