Extract shouldWritePreReleaseFlag(), use in JS as well as JVM

Fix the difference in behavior between JS and JVM

compiler/backend/src/org/jetbrains/kotlin/codegen/writeAnnotationUtil.kt

@@ -17,8 +17,7 @@
 package org.jetbrains.kotlin.codegen
 
 import org.jetbrains.kotlin.codegen.state.GenerationState
-import org.jetbrains.kotlin.config.KotlinCompilerVersion
-import org.jetbrains.kotlin.config.LanguageVersion
+import org.jetbrains.kotlin.config.shouldWritePreReleaseFlag
 import org.jetbrains.kotlin.load.java.JvmAnnotationNames
 import org.jetbrains.kotlin.load.java.JvmBytecodeBinaryVersion
 import org.jetbrains.kotlin.load.kotlin.JvmMetadataVersion
@@ -37,9 +36,7 @@ fun writeKotlinMetadata(
     av.visit(JvmAnnotationNames.BYTECODE_VERSION_FIELD_NAME, JvmBytecodeBinaryVersion.INSTANCE.toArray())
     av.visit(JvmAnnotationNames.KIND_FIELD_NAME, kind.id)
     var flags = extraFlags
-    val languageVersion = state.languageVersionSettings.languageVersion
-    if (KotlinCompilerVersion.isPreRelease() && languageVersion == LanguageVersion.LATEST_STABLE ||
-        !languageVersion.isStable) {
+    if (state.languageVersionSettings.shouldWritePreReleaseFlag()) {
         flags = flags or JvmAnnotationNames.METADATA_PRE_RELEASE_FLAG
     }
     if (flags != 0) {
@@ -53,4 +50,4 @@ fun writeSyntheticClassMetadata(cb: ClassBuilder, state: GenerationState) {
     writeKotlinMetadata(cb, state, KotlinClassHeader.Kind.SYNTHETIC_CLASS, 0) { _ ->
         // Do nothing
     }
-}
+}