[FIR] Fixed behavior of FirAnnotation.findArgumentByName for resolved annotations

The 'findArgumentByName' function was returning an invalid result for
annotation arguments with omitted argument name.

#KT-64276

compiler/testData/diagnostics/nativeTests/objCNameWIthDifferentSwiftName.kt

@@ -0,0 +1,21 @@
+// FIR_IDENTICAL
+// FILE: kotlin.kt
+@file:OptIn(ExperimentalObjCName::class)
+
+package kotlin.native
+
+import kotlin.experimental.ExperimentalObjCName
+
+fun interface BaseInterface {
+    @ObjCName(name = "close")
+    fun close()
+}
+
+open class BaseClass {
+    @ObjCName("close")
+    fun close() {
+    }
+}
+
+
+class DerivedClass : BaseClass(), BaseInterface {}