[BUGFIX] TS parser: Avoid warning on invalid directories

Having an invalid wildcard import to a not existing directory
should not raise a "No such file or directory" PHP warning:

@import 'EXT:sitepackage/.../NonExistingFolder/*.tsconfig'

Resolves: #100121
Releases: main
Change-Id: Ice567b27cfd78c166e2de2e61801fc8c02cf8a72
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78125


Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>