[JS_IR] Use new plugin to build Kotlin/JS stdlib with IR compiler

- Switch to building stdlib with bootstrap compiler since IR is stable
  enough
- Build stdlib with coreLibs by default
- Include JS IR stdlib to kotlin distribution

libraries/stdlib/js-v1/build.gradle

@@ -258,17 +258,16 @@ task libraryJarWithoutIr(type: Jar, dependsOn: compileJs) {
 }
 
 task libraryJarWithIr(type: Zip, dependsOn: libraryJarWithoutIr) {
-
     archiveExtension = "jar"
     destinationDirectory = file("$buildDir/libs")
 
     duplicatesStrategy DuplicatesStrategy.FAIL
 
     from zipTree(libraryJarWithoutIr.archiveFile)
-    if (rootProject.includeStdlibJsIr) {
-        def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:generateFullRuntimeKLib")
-        dependsOn(irKlib)
-        from fileTree(irKlib.outputs.files.singleFile.path)
+    dependsOn(":kotlin-stdlib-js-ir:compileKotlinJs")
+    from {
+        def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:compileKotlinJs")
+        fileTree(irKlib.outputs.files.first().path)
     }
 }