[JS IC] Support //RECOMPILE directive in js box tests

- change test runner to production mode when sources are being compiled
 into klib and then klib is being translated into js, not directly from
 kt to js
 - fix IC cache format
 - support IC tests

js/js.tests/build.gradle.kts

@@ -239,6 +239,7 @@ val testDataDir = project(":js:js.translator").projectDir.resolve("testData")
 
 projectTest(parallel = true) {
     setUpJsBoxTests(jsEnabled = true, jsIrEnabled = true)
+//    systemProperty("kotlin.js.ir.pir", "false")
 
     inputs.dir(rootDir.resolve("compiler/cli/cli-common/resources")) // compiler.xml