[K/JS] Generate .js files from .ts if they were not created, because of the incremental flag in tsconfig

The incremental option will prevent creating file if there is an incremental cache from TS compiler even if the file doesn't exist.
The situation could happen if `./gradlew clean` was executed (js file will be removed and ts incremental cache - not)

Merge-request: KT-MR-10229
Merged-by: Artem Kobzar <Artem.Kobzar@jetbrains.com>

js/js.translator/testData/typescript-export/common.tsconfig.json

@@ -2,7 +2,6 @@
   "compilerOptions": {
     "target": "es5",
     "strict": true,
-    "incremental": true,
     "newLine": "lf"
   }
 }