When testing the source SBOM using tst_license.pl
the file name is picked from the source SBOM file.
For windows, the file name has \ which does not correspond
to what is found in the licenseRule.json.
The file name is rewritten with /.
Task-number: QTBUG-131434
Change-Id: Ib88a626927c6ccfb639d43bcd9219d8b88fde0bf
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
(cherry picked from commit 4e4f50a52c58f2eec20c7bd0d321d9f547fb50c1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>