Fix modifiers generation for companion objects

when language verion is 1.3

 #KT-23002: Fixed

compiler/testData/codegen/box/compatibility/privateCompanionObject.kt

@@ -0,0 +1,12 @@
+// LANGUAGE_VERSION: 1.3
+
+class Test {
+    private companion object {
+        val res = "OK"
+    }
+    fun res() = res
+}
+
+fun box(): String {
+    return Test().res()
+}

compiler/testData/codegen/bytecodeListing/invisibleCompanionObject.txt

@@ -22,7 +22,7 @@ final class TestPrivateCompanion$Test {
 
 @kotlin.Metadata
 public final class TestPrivateCompanion {
-    public private final static field Test: TestPrivateCompanion$Test
+    private final static field Test: TestPrivateCompanion$Test
     inner class TestPrivateCompanion$Test
     static method <clinit>(): void
     public method <init>(): void
@@ -37,7 +37,7 @@ public final class TestProtectedCompanion$Test {
 
 @kotlin.Metadata
 public class TestProtectedCompanion {
-    public protected final static field Test: TestProtectedCompanion$Test
+    protected final static field Test: TestProtectedCompanion$Test
     inner class TestProtectedCompanion$Test
     static method <clinit>(): void
     public method <init>(): void