plugin-teach 2.0.1 + mongo 无法正常触发问题

[dragon-fish]

Describe the bug

koishi-core3.3.0升级到3.4.0,、teach从2.0.0升级到2.0.1时，新增的问题如果回答包含插值语法（例如$(echo 123)）时，无法被正常触发、修改、查询。

To Reproduce

使用 koishi 3.4.0 + plugin-teach 2.0.1 + plugin-mongo 2.2.0

假定问答前缀为 ?!，添加的问题编号为40：

> ?! 测试问题 $(echo 测试回复)
< 问答已添加，编号为 40。
> 测试问题
< (无回应，控制台【无】报错)
> ?!40
< (无回应，控制台报错)
> ?!40 -d
< (无回应，控制台报错)

Expected behavior

带有插值语法的教学能够正常工作，能够正常编辑

Screenshots

[I] MAIN ✉ [onebot] 收到群消息 群123456 用户名(654321) ?!40
[W] command executing command: ?!40
    TypeError: Cannot convert undefined or null to object
        at Function.entries (<anonymous>)
        at clone (C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:126)
        at C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:170
        at Array.map (<anonymous>)
        at clone (C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:142)
        at C:\QQbot-SILI\node_modules\koishi-plugin-teach\dist\index.js:980:93
        at Array.forEach (<anonymous>)
        at MongoDatabase.getDialoguesById (C:\QQbot-SILI\node_modules\koishi-plugin-teach\dist\index.js:977:15)
[I] MAIN ✉ [onebot] 收到群消息 群123456 用户名(654321) ?!40 -d
[W] command executing command: ?!40 -d
    TypeError: Cannot convert undefined or null to object
        at Function.entries (<anonymous>)
        at clone (C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:126)
        at C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:170
        at Array.map (<anonymous>)
        at clone (C:\QQbot-SILI\node_modules\koishi-utils\dist\index.js:445:142)
        at C:\QQbot-SILI\node_modules\koishi-plugin-teach\dist\index.js:980:93
        at Array.forEach (<anonymous>)
        at MongoDatabase.getDialoguesById (C:\QQbot-SILI\node_modules\koishi-plugin-teach\dist\index.js:977:15)

Versions

• koishi 3.4.0

• koishi-plugin-mongo 2.2.0

• koishi-plugin-teach 2.0.1

• OS: [e.g. iOS]

• Node Version: [e.g. 10.16.0] 15.4.0

• CoolQ Version: [e.g. 5.15.4] -

• CQHTTP Version: [e.g. 4.13.2] -

• Koishi Version: [e.g. 1.0.0] 3.4.0

Additional context

[dragon-fish]

另注：回答中不包含插值语法（例如 $(echo 123)）时，一切正常

[dragon-fish]

修正：回答中不包含插值语法时，问题能够正常触发回答，但是编辑问题时报错（例如 #40 #40 -d #40 ~ "foo" 等操作均无效）

假定问答前缀为 ?!，添加的问题编号为41：

> ?! 你好 我好
< 问答已添加，编号为 41。
> 你好
< 我好
> ?!41
< (无回应，控制台报错)
> ?!41 -E
< (无回应，控制台报错)

报错同上

[dragon-fish]

另提供两个问答在数据库中的document

问题40（?! 测试问题 $(echo 测试回复)）

{
    "_id": 40,
    "flag": 0,
    "answer": "$(echo 测试回复)",
    "question": "测试问题",
    "original": "测试问题",
    "groups": ["onebot:123456"],
    "probS": 1,
    "probA": 0,
    "predecessors": [],
    "startTime": 0,
    "endTime": 0,
    "writer": "81add3aa-85ea-4c4b-8922-03aa84177977"
}

问题41（?! 你好 我好）

{
    "_id": 41,
    "flag": 0,
    "answer": "我好",
    "question": "你好",
    "original": "你好",
    "groups": ["onebot:123456"],
    "probS": 1,
    "probA": 0,
    "predecessors": [],
    "startTime": 0,
    "endTime": 0,
    "writer": "81add3aa-85ea-4c4b-8922-03aa84177977"
}