[Tests] Migrate backend-independent tests from native to compiler/testData.

^KT-65979

compiler/testData/codegen/box/bridges/multipleModules1.kt

@@ -0,0 +1,32 @@
+// WITH_STDLIB
+// MODULE: lib
+// FILE: lib.kt
+
+package a
+
+interface A<T> {
+    fun foo(): T
+}
+
+open class C: A<Int> {
+    override fun foo(): Int = 42
+}
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+import a.*
+import kotlin.test.*
+
+class B: C()
+
+fun box(): String {
+    val b = B()
+    assertEquals(42, b.foo())
+    val c: C = b
+    assertEquals(42, c.foo())
+    val a: A<Int> = b
+    assertEquals(42, a.foo())
+
+    return "OK"
+}