adds a border radius to modal headers (#23799)
adds a border radius to modal headers (#23799)


SweetProcess/bootstrap,lipis/bootstrap,jipexu/bootstrap,zalog/bootstrap,Delagen/bootstrap,9-chirno/chirno,gijsbotje/bootstrap,seanwu99/bootstrap,janseliger/bootstrap,Lyricalz/bootstrap,yuyokk/bootstrap,tibo66/bootstrap,Lyricalz/bootstrap,supergibbs/bootstrap,zalog/bootstrap,TheFridayInstitute/bootstrap,Hemphill/bootstrap-docs,tagliala/bootstrap,GerHobbelt/bootstrap,kvlsrg/bootstrap,twbs/bootstrap,m5o/bootstrap,gijsbotje/bootstrap,SweetProcess/bootstrap,inway/bootstrap,realcrowd/bootstrap,vsn4ik/bootstrap,fschumann1211/bootstrap,creativewebjp/bootstrap,bootstrapbrasil/bootstrap,lipis/bootstrap,SweetProcess/bootstrap,TheFridayInstitute/bootstrap,realcrowd/bootstrap,lipis/bootstrap,vsn4ik/bootstrap,Lyricalz/bootstrap,creativewebjp/bootstrap,tibo66/bootstrap,coliff/bootstrap,bardiharborow/bootstrap,coliff/bootstrap,bootstrapbrasil/bootstrap,seanwu99/bootstrap,tibo66/bootstrap,fschumann1211/bootstrap,inway/bootstrap,Lyricalz/bootstrap,nice-fungal/bootstrap,tjkohli/bootstrap,SweetProcess/bootstrap,joblocal/bootstrap,twbs/bootstrap,peterblazejewicz/bootstrap,Hemphill/bootstrap-docs,supergibbs/bootstrap,9-chirno/chirno,bardiharborow/bootstrap,kvlsrg/bootstrap,zalog/bootstrap,seanwu99/bootstrap,9-chirno/chirno,fschumann1211/bootstrap,yuyokk/bootstrap,bardiharborow/bootstrap,jipexu/bootstrap,m5o/bootstrap,tagliala/bootstrap,stanwmusic/bootstrap,Delagen/bootstrap,janseliger/bootstrap,joblocal/bootstrap,tibo66/bootstrap,bootstrapbrasil/bootstrap,stanwmusic/bootstrap,supergibbs/bootstrap,peterblazejewicz/bootstrap,stanwmusic/bootstrap,realcrowd/bootstrap,joblocal/bootstrap,GerHobbelt/bootstrap,janseliger/bootstrap,yuyokk/bootstrap,TheFridayInstitute/bootstrap,tagliala/bootstrap,jipexu/bootstrap,janseliger/bootstrap,nice-fungal/bootstrap,tjkohli/bootstrap,creativewebjp/bootstrap,creativewebjp/bootstrap,vsn4ik/bootstrap,vsn4ik/bootstrap,gijsbotje/bootstrap,kvlsrg/bootstrap,Delagen/bootstrap,Hemphill/bootstrap-docs,joblocal/bootstrap,fschumann1211/bootstrap,supergibbs/bootstrap,stanwmusic/bootstrap,Hemphill/bootstrap-docs,inway/bootstrap,realcrowd/bootstrap,yuyokk/bootstrap,TheFridayInstitute/bootstrap,jipexu/bootstrap,lipis/bootstrap,bardiharborow/bootstrap,seanwu99/bootstrap,nice-fungal/bootstrap,9-chirno/chirno,GerHobbelt/bootstrap,Delagen/bootstrap,gijsbotje/bootstrap,peterblazejewicz/bootstrap