[LL] Don't filter out metadata declaration from stub symbol provider

Now the stub-based symbol provider is reused for common source sets,
which use metadata dependencies. Filtering should be done on scope
level, then declaration provider won't yield them in the first place.

KT-58769

analysis/low-level-api-fir/src/org/jetbrains/kotlin/analysis/low/level/api/fir/stubBased/deserialization/StubBasedFirDeserializedSymbolProvider.kt

@@ -141,11 +141,6 @@ internal open class StubBasedFirDeserializedSymbolProvider(
 
         return ArrayList<FirNamedFunctionSymbol>(topLevelFunctions.size).apply {
             for (function in topLevelFunctions) {
-                val file = function.containingKtFile
-                if (file.virtualFile.extension == MetadataPackageFragment.METADATA_FILE_EXTENSION) {
-                    continue
-                }
-
                 val functionStub = function.stub as? KotlinFunctionStubImpl ?: loadStubByElement(function)
                 val containerSource = getFacadeContainerSource(function.containingKtFile, functionStub?.origin)
 

compiler/testData/diagnostics/testsWithStdLib/multiplatform/collections.kt

@@ -5,10 +5,10 @@
 // FILE: common.kt
 // TARGET_PLATFORM: Common
 
-import kotlin.collections.<!UNRESOLVED_IMPORT!>listOf<!>
+import kotlin.collections.listOf
 
 fun common() {
-    <!UNRESOLVED_REFERENCE!>listOf<!>("foo", "bar").map { <!UNRESOLVED_REFERENCE!>it<!> }
+    listOf("foo", "bar").map { it }
 }
 
 // MODULE: jvm