fix #10054283860317 allow date strings for annotations
fix #10054283860317 allow date strings for annotations

etpinard/plotly.js,plotly/plotly.js,iongroup/plotly.js,iongroup/plotly.js,plotly/plotly.js,asolagmbh/plotly.js,aburato/plotly.js,etpinard/plotly.js,plotly/plotly.js,plotly/plotly.js,iongroup/plotly.js,asolagmbh/plotly.js,etpinard/plotly.js,asolagmbh/plotly.js,aburato/plotly.js