请尽快适配Flutter3.16

[jiabin87428]

Flutter升级3.16后使用example报错： rror: ../lib/src/common/power_image_provider.dart:41:53: Error: Type 'DecoderCallback' not found. ImageStreamCompleter load(PowerImageProvider key, DecoderCallback? decode) { ^^^^^^^^^^^^^^^ ../lib/src/common/power_image_provider.dart:49:31: Error: Type 'DecoderCallback' not found. PowerImageProvider key, DecoderCallback? decode) async { ^^^^^^^^^^^^^^^ ../lib/src/common/power_image_provider.dart:41:53: Error: 'DecoderCallback' isn't a type. ImageStreamCompleter load(PowerImageProvider key, DecoderCallback? decode) { ^^^^^^^^^^^^^^^ ../lib/src/common/power_image_provider.dart:49:31: Error: 'DecoderCallback' isn't a type. PowerImageProvider key, DecoderCallback? decode) async { ^^^^^^^^^^^^^^^

[q760440238]

已经没有人处理这玩意了，自己改一下吧