[FIR] Consider default values from expect function during serialization

It's not possible to unmute some tests for K2 because it causes testData structure changing

If change testData, NATIVE doesn't work even with `IGNORE_BACKEND`

compiler/fir/providers/src/org/jetbrains/kotlin/fir/declarations/declarationUtils.kt

@@ -116,3 +116,7 @@ inline val FirBasedSymbol<*>.isJavaOrEnhancement: Boolean
     get() = origin.isJavaOrEnhancement ||
             (fir as? FirCallableDeclaration)?.importedFromObjectOrStaticData?.original?.isJavaOrEnhancement == true
 
+fun FirFunctionSymbol<*>?.containsDefaultValue(index: Int): Boolean {
+    if (this == null) return false
+    return this.fir.valueParameters[index].defaultValue != null
+}