Build: enable Werror for almost all compileKotlin tasks

The only exception at this point is :kotlin-gradle-plugin:compileKotlin.

js/js.tests/test/org/jetbrains/kotlin/js/test/BasicIrBoxTest.kt

@@ -173,6 +173,7 @@ abstract class BasicIrBoxTest(
 
             fun prepareModule(allowIc: Boolean): ModulesStructure {
                 val useIc = runIcMode && allowIc
+                @Suppress("NAME_SHADOWING")
                 val icCache = if (useIc) icCache else emptyMap()
                 return if (!klibMainModule) {
                     prepareAnalyzedSourceModule(