fix bug of reduce unary not for logic xor

[jievince]

What type of PR is this?

• bug
• feature
• enhancement

What problem(s) does this PR solve?

Issue(s) number:

Fix #5090, Fix https://github.com/vesoft-inc/nebula-ent/issues/1818
NOT((NOT true) XOR true)) shouldn't be rewritten to true XOR false. They are not equivalent.

By the way, fixed #5089

Description:

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Tests:

• Unit test(positive and negative cases)
• Function test
• Performance test
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• Incompatibility (If it breaks the compatibility, please describe it and add the label.）
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• Performance impacted: Consumes more CPU/Memory

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ex. Fixed the bug .....

[yixinglu]

LGTM

[Aiee]

Good job!