sort the results of _mask_data so patch draw order is stable (#7049)
sort the results of _mask_data so patch draw order is stable (#7049)


jakirkham/bokeh,bokeh/bokeh,stonebig/bokeh,rs2/bokeh,rs2/bokeh,aavanian/bokeh,Karel-van-de-Plassche/bokeh,stonebig/bokeh,philippjfr/bokeh,stonebig/bokeh,dennisobrien/bokeh,jakirkham/bokeh,ericmjl/bokeh,aavanian/bokeh,aavanian/bokeh,Karel-van-de-Plassche/bokeh,bokeh/bokeh,Karel-van-de-Plassche/bokeh,timsnyder/bokeh,ericmjl/bokeh,mindriot101/bokeh,timsnyder/bokeh,mindriot101/bokeh,mindriot101/bokeh,bokeh/bokeh,Karel-van-de-Plassche/bokeh,ericmjl/bokeh,bokeh/bokeh,mindriot101/bokeh,rs2/bokeh,dennisobrien/bokeh,philippjfr/bokeh,timsnyder/bokeh,jakirkham/bokeh,jakirkham/bokeh,aavanian/bokeh,dennisobrien/bokeh,dennisobrien/bokeh,philippjfr/bokeh,bokeh/bokeh,ericmjl/bokeh,dennisobrien/bokeh,philippjfr/bokeh,aavanian/bokeh,Karel-van-de-Plassche/bokeh,stonebig/bokeh,timsnyder/bokeh,philippjfr/bokeh,timsnyder/bokeh,rs2/bokeh,jakirkham/bokeh,rs2/bokeh,ericmjl/bokeh