Fail if incorrect product info on manual integrations

http://ci-files01-hki.intra.qt.io:8080/coin/integration/qt/tqtc-qtbase/tasks/web_qt_tqtc-qtbase_1612980071344

This is problematic since there is none check that the values are correct and some random branch and project can be used in that case leading to invalid integrations.

• Disable automatic and fallback product/branch resolving for manual integrations.
• Fail if the inputted values are incorrect.