fix: Add authorization check for knowledge_delete node

[lvxinyu-1117]

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• The description of this PR title is user-oriented and clear enough for others to understand.
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en: Add authorization check for knowledge_delete node
zh(optional): 知识库删除节点增加文档是否属于所选知识库的鉴权校验

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 37.14286% with 22 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
backend/crossdomain/impl/knowledge/knowledge.go	0.00%	13 Missing ⚠️
...flow/internal/nodes/knowledge/knowledge_deleter.go	59.09%	6 Missing and 3 partials ⚠️

Files with missing lines	Coverage Δ
...ckend/api/model/crossdomain/knowledge/knowledge.go	0.00% <ø> (ø)
...flow/internal/nodes/knowledge/knowledge_deleter.go	60.37% <59.09%> (ø)
backend/crossdomain/impl/knowledge/knowledge.go	0.00% <0.00%> (ø)

... and 1873 files with indirect coverage changes

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