[Gradle, JS] Check existence of input file before run and test

#KT-36326 fixed

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/ir/KotlinJsIrSubTarget.kt

@@ -122,8 +122,11 @@ abstract class KotlinJsIrSubTarget(
 
             testJs.dependsOn(nodeJs.npmInstallTask, nodeJs.nodeJsSetupTask)
 
-            testJs.onlyIf {
-                compileTask.outputFile.exists()
+            testJs.onlyIf { task ->
+                (task as KotlinJsTest).inputFileProperty
+                    .asFile
+                    .map { it.exists() }
+                    .get()
             }
 
             testJs.compilation = compilation

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/nodejs/NodeJsExec.kt

@@ -9,9 +9,11 @@ import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.tasks.*
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJsCompilation
 import org.jetbrains.kotlin.gradle.targets.js.RequiredKotlinJsDependency
+import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrCompilation
 import org.jetbrains.kotlin.gradle.targets.js.npm.RequiresNpmDependencies
 import org.jetbrains.kotlin.gradle.targets.js.npm.npmProject
 import org.jetbrains.kotlin.gradle.tasks.registerTask
+import org.jetbrains.kotlin.gradle.utils.getValue
 import org.jetbrains.kotlin.gradle.utils.newFileProperty
 
 open class NodeJsExec : AbstractExecTask<NodeJsExec>(NodeJsExec::class.java), RequiresNpmDependencies {
@@ -23,8 +25,9 @@ open class NodeJsExec : AbstractExecTask<NodeJsExec>(NodeJsExec::class.java), Re
 
     init {
         onlyIf {
-            compilation.compileKotlinTask.outputFile
-                .exists()
+            inputFileProperty.asFile.map {
+                it.exists()
+            }.get()
         }
     }