fix: fix lsp completion for newline char

[He1pa]

1 .dot completion of schema attr with schema type
2. newline completion of schema attr when cursor in schema_stmt

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

• N
• Y [Bug][LSP] wrong completion for the newline character #916

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

lsp/completion.rs

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

1 .dot completion of schema attr with schema type
2. newline completion of schema attr when cursor in schema_stmt

• 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

[Peefy]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 7016709170

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 79 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+15.1%) to 87.787%

---

Files with Coverage Reduction	New Missed Lines	%
compiler_base/error/src/diagnostic/diagnostic_message.rs	3	96.1%
compiler_base/span/src/span.rs	3	0.0%
compiler_base/error/src/unit_type.rs	5	0.0%
compiler_base/session/src/lib.rs	15	75.81%
compiler_base/error/src/diagnostic/components.rs	23	81.01%
compiler_base/error/src/diagnostic/diagnostic_handler.rs	30	82.13%

Totals
Change from base Build 7016387853:	15.1%
Covered Lines:	2293
Relevant Lines:	2612

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 7017071588

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 79 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+15.1%) to 87.787%

---

Files with Coverage Reduction	New Missed Lines	%
compiler_base/error/src/diagnostic/diagnostic_message.rs	3	96.1%
compiler_base/span/src/span.rs	3	0.0%
compiler_base/error/src/unit_type.rs	5	0.0%
compiler_base/session/src/lib.rs	15	75.81%
compiler_base/error/src/diagnostic/components.rs	23	81.01%
compiler_base/error/src/diagnostic/diagnostic_handler.rs	30	82.13%

Totals
Change from base Build 7016387853:	15.1%
Covered Lines:	2293
Relevant Lines:	2612

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 7017071579

• 66 of 75 (88.0%) changed or added relevant lines in 3 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.09%) to 72.737%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kclvm/tools/src/LSP/src/util.rs	12	14	85.71%
kclvm/tools/src/LSP/src/completion.rs	53	60	88.33%

Files with Coverage Reduction	New Missed Lines	%
kclvm/tools/src/LSP/src/completion.rs	1	90.73%

Totals
Change from base Build 7016387853:	0.09%
Covered Lines:	42360
Relevant Lines:	58237

---

💛 - Coveralls