Show warning when the script is a module
Show warning when the script is a module

The warning can be removed in #23545.

saneyuki/servo,splav/servo,notriddle/servo,KiChjang/servo,KiChjang/servo,notriddle/servo,KiChjang/servo,DominoTree/servo,DominoTree/servo,larsbergstrom/servo,KiChjang/servo,larsbergstrom/servo,larsbergstrom/servo,splav/servo,larsbergstrom/servo,saneyuki/servo,notriddle/servo,notriddle/servo,KiChjang/servo,splav/servo,DominoTree/servo,saneyuki/servo,larsbergstrom/servo,saneyuki/servo,larsbergstrom/servo,DominoTree/servo,splav/servo,saneyuki/servo,DominoTree/servo,KiChjang/servo,saneyuki/servo,splav/servo,larsbergstrom/servo,DominoTree/servo,saneyuki/servo,KiChjang/servo,saneyuki/servo,splav/servo,larsbergstrom/servo,notriddle/servo,notriddle/servo,splav/servo,notriddle/servo,notriddle/servo,DominoTree/servo,DominoTree/servo,DominoTree/servo,splav/servo,KiChjang/servo,saneyuki/servo,saneyuki/servo,splav/servo,notriddle/servo,splav/servo,larsbergstrom/servo,notriddle/servo,KiChjang/servo,KiChjang/servo,DominoTree/servo,larsbergstrom/servo