fix: fix schema scope variables sema info and comments symbols panic

[He1pa]

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

• N
• Y [Enhancement][Track] KCL VSCode IDE extension and lsp enhancement #524

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

kclvm/sema/src/advanced_resolver/node.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

[coveralls]

Pull Request Test Coverage Report for Build 7695301173

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 79 unchanged lines in 6 files lost coverage.
• Overall coverage increased (+15.5%) 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 7693976016:	15.5%
Covered Lines:	2293
Relevant Lines:	2612

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 7695322708

• -2 of 16 (87.5%) changed or added relevant lines in 3 files are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.01%) to 72.322%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kclvm/sema/src/advanced_resolver/node.rs	11	12	91.67%
kclvm/tools/src/LSP/src/hover.rs	2	3	66.67%

Files with Coverage Reduction	New Missed Lines	%
kclvm/tools/src/LSP/src/completion.rs	3	90.98%

Totals
Change from base Build 7693976016:	0.01%
Covered Lines:	43755
Relevant Lines:	60500

---

💛 - Coveralls

[Peefy]

LGTM