fix formatting of unsaved changes in LSP

[vemoo]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• N
• Y

2. What is the scope of this PR (e.g. component or file name):

• kclvm/tools/src/LSP/src/request.rs
• kclvm/tools/src/LSP/src/tests.rs

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• N
• Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• Unit test
• Integration test
• Benchmark (add benchmark stats below)
• Manual test (add detailed scripts or steps below)
• Other

[github-actions]

CLA Assistant Lite bot All contributors have signed the CLA ✍️ ✅

[coveralls]

Pull Request Test Coverage Report for Build 8470695994

Details

• 78 of 78 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 72.364%

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Totals
Change from base Build 8469292050:	0.03%
Covered Lines:	47402
Relevant Lines:	65505

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💛 - Coveralls

[vemoo]

I have read the CLA Document and I hereby sign the CLA

[Peefy]

Thank you for the contribution. LGTM! cc @He1pa

[Peefy]

LGTM

[He1pa]

LGTM