[Engineer] fix: fix json editor remove last line error

[SudoUserReal]

中文模板 / Chinese Template

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PR description

Fixes #

Changelog

🇨🇳 Chinese

• Fix: 修复 JsonViewer 全选之后删除或者刪除最后一个字符再点击删除报错的问题

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🇺🇸 English

• Fix: Fixed the issue that JsonViewer reports an error when deleting or deleting the last character after selecting all and then clicking Delete

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semi-design    Run #3209

Run Properties:   Passed #3209  •  379bd32dc8 ℹ️: Merge c7855dbb938b056c6a4b8a0e79e1c824023b2d68 into 0b7c01445856d08364b7331e9080...

Project	semi-design
Branch Review	fix_jsonViewer_empty_line
Run status	Passed #3209
Run duration	08m 03s
Commit	379bd32dc8 ℹ️: Merge c7855dbb938b056c6a4b8a0e79e1c824023b2d68 into 0b7c01445856d08364b7331e9080...
Committer	SudoUser
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