鸿蒙手机上加载TileLayer报错

[fuzhenn]

maptalks's version and what browser you use?

v0.49.5

Issue description

鸿蒙手机加载TileLayer时报错：Failed to execute 'texImage2D' on 'WebGLRenderingContext'
但renderer改为canvas时，也仍然报错。

Please provide a reproduction URL (on any jsfiddle like site)