Hide java.lang.CharSequence::isEmpty from Kotlin built-in class

Also, prohibit using it as a synthetic property

^KT-42467 In progress

compiler/frontend.java/src/org/jetbrains/kotlin/synthetic/JavaSyntheticPropertiesScope.kt

@@ -162,6 +162,7 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
         return descriptor.valueParameters.isEmpty()
                 && descriptor.typeParameters.isEmpty()
                 && descriptor.visibility.isVisibleOutside()
+                && !descriptor.isHiddenForResolutionEverywhereBesideSupercalls
     }
 
     private fun isGoodSetMethod(descriptor: FunctionDescriptor, getMethod: FunctionDescriptor): Boolean {
@@ -178,6 +179,7 @@ class JavaSyntheticPropertiesScope(storageManager: StorageManager, private val l
         return parameter.varargElementType == null
                 && descriptor.typeParameters.isEmpty()
                 && descriptor.visibility.isVisibleOutside()
+                && !descriptor.isHiddenForResolutionEverywhereBesideSupercalls
     }
 
     private fun FunctionDescriptor.findOverridden(condition: (FunctionDescriptor) -> Boolean): FunctionDescriptor? {

compiler/tests-java8/tests/org/jetbrains/kotlin/serialization/builtins/AdditionalBuiltInsMembersSignatureListsTest.kt

@@ -76,6 +76,7 @@ class AdditionalBuiltInsMembersSignatureListsTest : KotlinTestWithEnvironment()
     }
 
     private val LATE_JDK_SIGNATURES = mapOf(
-        "java/lang/String" to setOf("isBlank()Z", "lines()Ljava/util/stream/Stream;", "repeat(I)Ljava/lang/String;")
+        "java/lang/String" to setOf("isBlank()Z", "lines()Ljava/util/stream/Stream;", "repeat(I)Ljava/lang/String;"),
+        "java/lang/CharSequence" to setOf("isEmpty()Z"),
     )
 }

core/compiler.common.jvm/src/org/jetbrains/kotlin/builtins/jvm/JvmBuiltInsSignatures.kt

@@ -51,7 +51,9 @@ object JvmBuiltInsSignatures {
                     inJavaLang("Double", "isInfinite()Z", "isNaN()Z") +
                     inJavaLang("Float", "isInfinite()Z", "isNaN()Z") +
 
-                    inJavaLang("Enum", "getDeclaringClass()Ljava/lang/Class;", "finalize()V")
+                    inJavaLang("Enum", "getDeclaringClass()Ljava/lang/Class;", "finalize()V") +
+                    inJavaLang("CharSequence", "isEmpty()Z")
+
         }
 
     private fun buildPrimitiveValueMethodsSet(): Set<String> =