KT-2752: fix old tests, add test for clashing between class and its companion object

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/noUnsupportedInLocals.kt

@@ -2,7 +2,7 @@
 
 val foo: dynamic = 1
 
-fun foo() {
+fun bar() {
     class C {
         val foo: dynamic = 1
     }

compiler/testData/diagnostics/testsWithJsStdLib/dynamicTypes/noUnsupportedInLocals.txt

@@ -1,4 +1,4 @@
 package
 
 public val foo: dynamic = 1
-public fun foo(): kotlin.Unit
+public fun bar(): kotlin.Unit

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeInvoke/onNonNativeClassMembers.kt

@@ -14,7 +14,7 @@ class A {
     fun Int.invoke(a: String, b: Int)<!> = "OK"
 
     <!WRONG_ANNOTATION_TARGET!>@nativeInvoke<!>
-    val foo = 0
+    val baz = 0
 
     <!WRONG_ANNOTATION_TARGET!>@nativeInvoke<!>
     object Obj {}

compiler/testData/diagnostics/testsWithJsStdLib/native/nativeInvoke/onNonNativeClassMembers.txt

@@ -2,7 +2,7 @@ package
 
 public final class A {
     public constructor A()
-    @kotlin.js.nativeInvoke() public final val foo: kotlin.Int = 0
+    @kotlin.js.nativeInvoke() public final val baz: kotlin.Int = 0
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     @kotlin.js.nativeInvoke() public final fun foo(): kotlin.Unit
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int

js/js.translator/testData/nameClashes/cases/classAndCompanionObjectMembers.kt

@@ -0,0 +1,23 @@
+package foo
+
+class A {
+    fun foo() = 23
+
+    val bar = 123
+
+    companion object {
+        fun foo() = 42
+
+        val bar = 142
+    }
+}
+
+fun box(): String {
+    assertEquals(23, A().foo())
+    assertEquals(42, A.foo())
+
+    assertEquals(123, A().bar)
+    assertEquals(142, A.bar)
+
+    return "OK"
+}