[BUGFIX] Fix broken TypeScript compiler setting

This patch adds a missing compilerOption to generate subfolder in the
build directory, which fix the copy to final destination problem.

Resolves: #79431
Releases: master
Change-Id: Ie756d47e12d2ff72aa6db397d87db311eed43b59
Reviewed-on: https://review.typo3.org/51404


Reviewed-by: Helmut Hummel <typo3@helhum.io>
Tested-by: Helmut Hummel <typo3@helhum.io>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>