[AA] return expect declaration for "implicit" actual

If actual declaration is broken (missing explicit `actual` keyword),
expect declaration still makes sense.
This way, we allow refactorings on broken code

^KT-65191 fixed

analysis/analysis-api/testData/components/multiplatformInfoProvider/expectForActual/actual_primaryConstructor.descriptors.txt

@@ -0,0 +1 @@
+expected symbols:

analysis/analysis-api/testData/components/multiplatformInfoProvider/expectForActual/actual_primaryConstructor.kt

@@ -0,0 +1,14 @@
+// !LANGUAGE: +MultiPlatformProjects
+// MODULE: commonMain
+// FILE: Common.kt
+
+package sample
+expect class Foo(n: Int)
+
+// MODULE: androidMain()()(commonMain)
+// FILE: JvmAndroid.kt
+
+package sample
+actual class Foo<caret>(n: Int) {
+    val k = n
+}

analysis/analysis-api/testData/components/multiplatformInfoProvider/expectForActual/actual_primaryConstructor.txt

@@ -0,0 +1,2 @@
+expected symbols:
+Common.kt : constructor(n: kotlin.Int)