Auto merge of #14278 - emilio:layout-data-in-script, r=Ms2ger
Auto merge of #14278 - emilio:layout-data-in-script, r=Ms2ger

style: Don't assert when the final rule tree GC happens in script.

This should silence the assertions in https://github.com/servo/servo/issues/14213.

r? @Ms2ger

<!-- Reviewable:start -->
---
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/14278)
<!-- Reviewable:end -->

pyfisch/servo,thiagopnts/servo,nnethercote/servo,thiagopnts/servo,emilio/servo,thiagopnts/servo,mattnenterprise/servo,sadmansk/servo,mbrubeck/servo,KiChjang/servo,splav/servo,emilio/servo,SimonSapin/servo,eddyb/servo,splav/servo,peterjoel/servo,rnestler/servo,SimonSapin/servo,sadmansk/servo,saneyuki/servo,emilio/servo,DominoTree/servo,mattnenterprise/servo,szeged/servo,larsbergstrom/servo,pyfisch/servo,mbrubeck/servo,saneyuki/servo,pyfisch/servo,jimberlage/servo,rnestler/servo,eddyb/servo,cbrewster/servo,ConnorGBrewster/servo,saneyuki/servo,sadmansk/servo,fiji-flo/servo,emilio/servo,peterjoel/servo,rnestler/servo,mattnenterprise/servo,SimonSapin/servo,thiagopnts/servo,notriddle/servo,SimonSapin/servo,paulrouget/servo,peterjoel/servo,DominoTree/servo,mbrubeck/servo,ConnorGBrewster/servo,canaltinova/servo,rnestler/servo,notriddle/servo,KiChjang/servo,anthgur/servo,fiji-flo/servo,peterjoel/servo,mattnenterprise/servo,pyfisch/servo,sadmansk/servo,avadacatavra/servo,peterjoel/servo,mattnenterprise/servo,CJ8664/servo,mbrubeck/servo,szeged/servo,dati91/servo,avadacatavra/servo,upsuper/servo,cbrewster/servo,DominoTree/servo,DominoTree/servo,peterjoel/servo,SimonSapin/servo,CJ8664/servo,KiChjang/servo,emilio/servo,fiji-flo/servo,pyfisch/servo,fiji-flo/servo,saneyuki/servo,jimberlage/servo,saneyuki/servo,KiChjang/servo,szeged/servo,fiji-flo/servo,szeged/servo,mattnenterprise/servo,paulrouget/servo,splav/servo,splav/servo,avadacatavra/servo,cbrewster/servo,saneyuki/servo,ConnorGBrewster/servo,rnestler/servo,ConnorGBrewster/servo,fiji-flo/servo,notriddle/servo,jimberlage/servo,dati91/servo,DominoTree/servo,DominoTree/servo,nnethercote/servo,emilio/servo,eddyb/servo,dati91/servo,pyfisch/servo,upsuper/servo,emilio/servo,anthgur/servo,mbrubeck/servo,nnethercote/servo,cbrewster/servo,saneyuki/servo,cbrewster/servo,mbrubeck/servo,jimberlage/servo,splav/servo,paulrouget/servo,emilio/servo,jimberlage/servo,upsuper/servo,canaltinova/servo,emilio/servo,larsbergstrom/servo,CJ8664/servo,KiChjang/servo,thiagopnts/servo,szeged/servo,KiChjang/servo,peterjoel/servo,splav/servo,canaltinova/servo,emilio/servo,KiChjang/servo,DominoTree/servo,avadacatavra/servo,larsbergstrom/servo,mattnenterprise/servo,dati91/servo,nnethercote/servo,canaltinova/servo,eddyb/servo,anthgur/servo,eddyb/servo,larsbergstrom/servo,canaltinova/servo,pyfisch/servo,paulrouget/servo,upsuper/servo,dati91/servo,anthgur/servo,sadmansk/servo,nnethercote/servo,dsandeephegde/servo,splav/servo,saneyuki/servo,rnestler/servo,SimonSapin/servo,anthgur/servo,dsandeephegde/servo,anthgur/servo,thiagopnts/servo,DominoTree/servo,splav/servo,larsbergstrom/servo,anthgur/servo,mattnenterprise/servo,nnethercote/servo,dsandeephegde/servo,szeged/servo,szeged/servo,upsuper/servo,larsbergstrom/servo,jimberlage/servo,larsbergstrom/servo,cbrewster/servo,pyfisch/servo,KiChjang/servo,canaltinova/servo,splav/servo,sadmansk/servo,paulrouget/servo,larsbergstrom/servo,notriddle/servo,peterjoel/servo,mbrubeck/servo,nnethercote/servo,dsandeephegde/servo,notriddle/servo,DominoTree/servo,paulrouget/servo,CJ8664/servo,notriddle/servo,upsuper/servo,upsuper/servo,pyfisch/servo,SimonSapin/servo,SimonSapin/servo,jimberlage/servo,saneyuki/servo,dsandeephegde/servo,paulrouget/servo,CJ8664/servo,szeged/servo,szeged/servo,paulrouget/servo,DominoTree/servo,dati91/servo,paulrouget/servo,szeged/servo,dsandeephegde/servo,cbrewster/servo,nnethercote/servo,nnethercote/servo,sadmansk/servo,peterjoel/servo,canaltinova/servo,notriddle/servo,dati91/servo,thiagopnts/servo,dati91/servo,eddyb/servo,ConnorGBrewster/servo,nnethercote/servo,ConnorGBrewster/servo,jimberlage/servo,ConnorGBrewster/servo,peterjoel/servo,fiji-flo/servo,dsandeephegde/servo,avadacatavra/servo,fiji-flo/servo,splav/servo,avadacatavra/servo,ConnorGBrewster/servo,jimberlage/servo,CJ8664/servo,dsandeephegde/servo,canaltinova/servo,notriddle/servo,KiChjang/servo,notriddle/servo,rnestler/servo,mbrubeck/servo,larsbergstrom/servo,cbrewster/servo,thiagopnts/servo,avadacatavra/servo,upsuper/servo,sadmansk/servo,eddyb/servo,anthgur/servo,avadacatavra/servo,CJ8664/servo,CJ8664/servo,notriddle/servo,rnestler/servo,larsbergstrom/servo,pyfisch/servo,KiChjang/servo,paulrouget/servo,saneyuki/servo,eddyb/servo