Mark collapse attempt denied as an expected error (#23380)
Mark collapse attempt denied as an expected error (#23380)

Fixes https://github.com/ampproject/amphtml/issues/20935
alanorozco/amphtml,mhc-gh/amphtml,media-net/amphtml,nexxtv/amphtml,cory-work/amphtml,yandex-pcode/amphtml,cory-work/amphtml,lannka/amphtml,ampproject/amphtml,jridgewell/amphtml,lannka/amphtml,adup-tech/amphtml,sharethrough/amphtml,jmadler/amphtml,voyagegroup/amphtml,cory-work/amphtml,honeybadgerdontcare/amphtml,prateekbh/amphtml,alanorozco/amphtml,yandex-pcode/amphtml,alanorozco/amphtml,tlong2/amphtml,honeybadgerdontcare/amphtml,Gregable/amphtml,jpettitt/amphtml,zhouyx/amphtml,src-code/amphtml,danielrozenberg/amphtml,lannka/amphtml,rsimha-amp/amphtml,danielrozenberg/amphtml,rsimha-amp/amphtml,jmadler/amphtml,smartadserver/amphtml,prateekbh/amphtml,jridgewell/amphtml,ampproject/amphtml,Gregable/amphtml,yandex-pcode/amphtml,zhangsu/amphtml,taboola/amphtml,smartadserver/amphtml,smartadserver/amphtml,src-code/amphtml,mhc-gh/amphtml,jpettitt/amphtml,media-net/amphtml,voyagegroup/amphtml,voyagegroup/amphtml,ampproject/amphtml,mhc-gh/amphtml,rsimha-amp/amphtml,zhangsu/amphtml,lannka/amphtml,src-code/amphtml,danielrozenberg/amphtml,mhc-gh/amphtml,nexxtv/amphtml,ampproject/amphtml,media-net/amphtml,voyagegroup/amphtml,dotandads/amphtml,honeybadgerdontcare/amphtml,adup-tech/amphtml,tlong2/amphtml,yandex-pcode/amphtml,jpettitt/amphtml,jpettitt/amphtml,danielrozenberg/amphtml,sharethrough/amphtml,tlong2/amphtml,tlong2/amphtml,Gregable/amphtml,jpettitt/amphtml,zhouyx/amphtml,dotandads/amphtml,ampproject/amphtml,adup-tech/amphtml,src-code/amphtml,cory-work/amphtml,voyagegroup/amphtml,ampproject/amphtml,rsimha-amp/amphtml,zhangsu/amphtml,zhouyx/amphtml,honeybadgerdontcare/amphtml,voyagegroup/amphtml,zhouyx/amphtml,erwinmombay/amphtml,taboola/amphtml,taboola/amphtml,mhc-gh/amphtml,tlong2/amphtml,prateekbh/amphtml,jridgewell/amphtml,sharethrough/amphtml,media-net/amphtml,jpettitt/amphtml,alanorozco/amphtml,erwinmombay/amphtml,erwinmombay/amphtml,alanorozco/amphtml,Gregable/amphtml,zhangsu/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,dotandads/amphtml,mhc-gh/amphtml,jmadler/amphtml,lannka/amphtml,jmadler/amphtml,jridgewell/amphtml,jridgewell/amphtml,zhouyx/amphtml,prateekbh/amphtml,zhouyx/amphtml,nexxtv/amphtml,media-net/amphtml,lannka/amphtml,jpettitt/amphtml,nexxtv/amphtml,dotandads/amphtml,nexxtv/amphtml,sharethrough/amphtml,tlong2/amphtml,jridgewell/amphtml,dotandads/amphtml,honeybadgerdontcare/amphtml,rsimha-amp/amphtml,Gregable/amphtml,zhouyx/amphtml,smartadserver/amphtml,cory-work/amphtml,lannka/amphtml,danielrozenberg/amphtml,yandex-pcode/amphtml,mhc-gh/amphtml,honeybadgerdontcare/amphtml,media-net/amphtml,Gregable/amphtml,jridgewell/amphtml,erwinmombay/amphtml,jpettitt/amphtml,rsimha-amp/amphtml,smartadserver/amphtml,sharethrough/amphtml,prateekbh/amphtml,adup-tech/amphtml,danielrozenberg/amphtml,nexxtv/amphtml,ampproject/amphtml,zhangsu/amphtml,cory-work/amphtml,mhc-gh/amphtml,dotandads/amphtml,Gregable/amphtml,ampproject/amphtml,voyagegroup/amphtml,honeybadgerdontcare/amphtml,erwinmombay/amphtml,alanorozco/amphtml,nexxtv/amphtml,cory-work/amphtml,src-code/amphtml,taboola/amphtml,Gregable/amphtml,danielrozenberg/amphtml,taboola/amphtml,smartadserver/amphtml,adup-tech/amphtml,rsimha-amp/amphtml,taboola/amphtml,jmadler/amphtml,media-net/amphtml,media-net/amphtml,sharethrough/amphtml,taboola/amphtml,zhangsu/amphtml,alanorozco/amphtml,prateekbh/amphtml,jmadler/amphtml,adup-tech/amphtml,erwinmombay/amphtml,prateekbh/amphtml,yandex-pcode/amphtml,src-code/amphtml,alanorozco/amphtml