Add default value for `$ignore-warning` (#28103)
Add default value for `$ignore-warning` (#28103)


zalog/bootstrap,stanwmusic/bootstrap,inway/bootstrap,kvlsrg/bootstrap,stanwmusic/bootstrap,peterblazejewicz/bootstrap,kvlsrg/bootstrap,kvlsrg/bootstrap,GerHobbelt/bootstrap,tagliala/bootstrap,inway/bootstrap,nice-fungal/bootstrap,m5o/bootstrap,m5o/bootstrap,twbs/bootstrap,tagliala/bootstrap,tagliala/bootstrap,stanwmusic/bootstrap,zalog/bootstrap,inway/bootstrap,peterblazejewicz/bootstrap,coliff/bootstrap,tjkohli/bootstrap,stanwmusic/bootstrap,GerHobbelt/bootstrap,nice-fungal/bootstrap,twbs/bootstrap,GerHobbelt/bootstrap,zalog/bootstrap,nice-fungal/bootstrap,peterblazejewicz/bootstrap,coliff/bootstrap,tjkohli/bootstrap