Revert "[JS IR] stdlib: switch between artifacts rather than artifact content"

The default Jar task is disabled, but its archive file is still
configured as an artifact to be published in the 'archives' configuration.
Thus, neither 'install', nor 'publish' tasks could not find this file
when `libraryJarWithIr` isn't triggered and does not build it.
Removing that artifact from the 'archives' configuration artifacts makes
'install' task publish nothing.

Therefore it's better to revert the change so that 'libraryJarWithIr' task
always runs and produces an artifact with the default name.

This reverts commit a9fec211

libraries/kotlin.test/js/build.gradle

@@ -59,10 +59,11 @@ task libraryJarWithIr(type: Zip, dependsOn: libraryJarWithoutIr) {
     duplicatesStrategy DuplicatesStrategy.FAIL
 
     from zipTree(libraryJarWithoutIr.archiveFile)
-
-    def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:generateKotlinTestKLib")
-    dependsOn(irKlib)
-    from fileTree("${irKlib.outputs.files.singleFile.path}/klib")
+    if (rootProject.includeStdlibJsIr) {
+        def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:generateKotlinTestKLib")
+        dependsOn(irKlib)
+        from fileTree("${irKlib.outputs.files.singleFile.path}/klib")
+    }
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {
@@ -72,7 +73,7 @@ task sourcesJar(type: Jar, dependsOn: classes) {
 
 artifacts {
     runtime libraryJarWithoutIr
-    archives rootProject.includeStdlibJsIr ? libraryJarWithIr : libraryJarWithoutIr
+    archives libraryJarWithIr
     distLibrary libraryJarWithoutIr
     archives sourcesJar
     sources sourcesJar

libraries/stdlib/js-v1/build.gradle

@@ -317,10 +317,11 @@ task libraryJarWithIr(type: Zip, dependsOn: libraryJarWithoutIr) {
     duplicatesStrategy DuplicatesStrategy.FAIL
 
     from zipTree(libraryJarWithoutIr.archiveFile)
-
-    def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:generateFullRuntimeKLib")
-    dependsOn(irKlib)
-    from fileTree("${irKlib.outputs.files.singleFile.path}/klib")
+    if (rootProject.includeStdlibJsIr) {
+        def irKlib = tasks.getByPath(":kotlin-stdlib-js-ir:generateFullRuntimeKLib")
+        dependsOn(irKlib)
+        from fileTree("${irKlib.outputs.files.singleFile.path}/klib")
+    }
 }
 
 
@@ -370,7 +371,7 @@ task distSourcesJar(type: Jar) {
 
 artifacts {
     runtime libraryJarWithoutIr
-    archives rootProject.includeStdlibJsIr ? libraryJarWithIr : libraryJarWithoutIr
+    archives libraryJarWithIr
     archives sourcesJar
     sources sourcesJar
     distSources distSourcesJar