feat: add retry function for media messages

[jiz4oh]

comwechat 有 bug，偶尔会有这种 video/image 等不带 filepath 的消息

{
  'extrainfo': '<msgsource>\n\t<alnode>\n\t\t<fr>2</fr>\n\t</alnode>\n\t<tmp_node>\n\t\t<publisher-id></publisher-id>\n\t</tmp_node>\n\t<videopreloadlen>696270</videopreloadlen>\n\t<sec_msg_node>\n\t\t<uuid>74206657501c59dcd579ed62d6e4f641_</uuid>\n\t\t<risk-file-flag />\n\t\t<risk-file-md5-list />\n\t</sec_msg_node>\n\t<videomsg_pd cdnvideourl_size="2168123" cdnvideourl_score_all="" cdnvideourl_pd_pri="30" cdnvideourl_pd="0" />\n\t<silence>1</silence\n\t<membercount>183</membercount>\n\t<signature>N0_V1_KaPrvbXa|v1_roIRDPfD</signature>\n</msgsource>\n',
  'filepath': '',
  'isSendMsg': 0,
  'message': '<?xml version="1.0"?>\n<msg>\n\t<videomsg aeskey="77ce5eff066fd9199e3664bbe3c1ce71" cdnvideourl="3057020100044b30490201000204f13225d402032f5c39020429000c790204692d906c042436313366336139362d373530352d343037322d393464322d6539343936363861663430370204052408040201000405004c550500" cdnthumbaeskey="77ce5eff066fd9199e3664bbe3c1ce71" cdnthumburl="3057020100044b30490201000204f13225d402032f5c39020429000c790204692d906c042436313366336139362d373530352d343037322d393464322d6539343936363861663430370204052408040201000405004c550500" length="2168123" playlength="16" cdnthumblength="18231" cdnthumbwidth="254" cdnthumbheight="452" fromusername="feifei599391" md5="2dd0944652134a3b6a51fd117ad2adea" newmd5="53998e517ba121545e0ad92dd4060008" isplaceholder="0" rawmd5="" rawlength="0" cdnrawvideourl="" cdnrawvideoaeskey="" overwritenewmsgid="0" originsourcemd5="" isad="0" />\n</msg>\n',
  'msgid': 4762485558704801495,
  'pid': 32,
  'self': 'wxid_pesbuk5l2lfq21',
  'sender': '52712247978@chatroom',
  'sign': '294e1dd3f257ba8b4e0f208c25741618',
  'thumb_path': '',
  'time': '2025-12-01 23:44:54',
  'timestamp': 1764636960,
  'type': 'video',
  'wxid': 'feifei599391'
}

在一些异常的媒体消息上添加重试命令。也可以主动回复 /retry 做重试