Fix: lsp crash caused by vfs loader

[He1pa]

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

• N
• Y fix [Bugfix] Language Server sometimes crashes and won't restart automatically #760

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

tools/LSP

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

lsp crash when close file.
The reason is that the receiver of vfs is dropped when creating a new LanguageServerState. When the file is closed, there is no object to accept the Message, causing panic.

ref: https://github.com/rust-lang/rust-analyzer/blob/d6afb4fa239fe7b5b34e5cefa9e58148fdff65b8/crates/rust-analyzer/src/global_state.rs#L148

• 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

[coveralls]

Pull Request Test Coverage Report for Build 6542986775

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 87.82%

---

Totals
Change from base Build 6533686227:	0.0%
Covered Lines:	2300
Relevant Lines:	2619

---

💛 - Coveralls

[Peefy]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 6543071638

• 53 of 54 (98.15%) changed or added relevant lines in 3 files are covered.
• 471 unchanged lines in 8 files lost coverage.
• Overall coverage decreased (-17.2%) to 70.582%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kclvm/tools/src/LSP/src/notification.rs	1	2	50.0%

Files with Coverage Reduction	New Missed Lines	%
compiler_base/error/src/diagnostic/components.rs	6	0.0%
compiler_base/error/src/errors.rs	8	0.0%
compiler_base/session/src/lib.rs	26	58.06%
compiler_base/error/src/diagnostic/mod.rs	27	0.0%
compiler_base/error/src/diagnostic/style.rs	41	0.0%
compiler_base/error/src/diagnostic/diagnostic_message.rs	74	0.0%
compiler_base/error/src/emitter.rs	119	0.0%
compiler_base/error/src/diagnostic/diagnostic_handler.rs	170	0.0%

Totals
Change from base Build 6533686227:	-17.2%
Covered Lines:	36423
Relevant Lines:	51604

---

💛 - Coveralls