fix: replace bare except with specific exception types

[leavesster]

Summary

• Replaces bare except: with except (KeyError, TypeError, ValueError):
• Bare except catches KeyboardInterrupt and SystemExit, preventing normal program termination
• Now only catches exceptions that StoreKey.__init__ may actually raise

Test plan

• pyright type check passes
• Python syntax validation passes
• Verify KeyboardInterrupt (Ctrl+C) properly terminates the executor

[coderabbitai]

Summary by CodeRabbit

Bug Fixes

• 优化了异常处理机制，使系统能够更准确地识别和处理特定类型的异常，其他意外异常将正确传播，提升了错误诊断的可靠性。

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概览

修改异常处理逻辑，将宽泛的except子句替换为特定捕获KeyError、TypeError和ValueError异常。这允许其他意外异常传播，使错误处理更加精准。

变更

文件/变更群组	摘要
异常处理精化 executor/python_executor/context.py	将StoreKey构建时的广泛异常捕获替换为特定的三类异常（KeyError、TypeError、ValueError），仅将这些异常视为无效对象引用，其他异常将传播。

代码审查工作量估算

🎯 2 (Simple) | ⏱️ ~8 分钟

🚥 Pre-merge checks | ✅ 2

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	标题格式正确，遵循了 <type>(<scope>): <subject> 的规范，准确描述了主要变更内容（用具体异常类型替换bare except）。
Description check	✅ Passed	描述与变更集相关，清楚地说明了问题所在、解决方案以及测试计划，与代码变更直接对应。

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[Copilot]

Pull request overview

This PR fixes a problematic bare except: clause by replacing it with specific exception types (KeyError, TypeError, ValueError). The bare except was catching all exceptions including KeyboardInterrupt and SystemExit, which prevented proper program termination.

Changes:

• Replaced bare except: with except (KeyError, TypeError, ValueError): in the createContext function
• Removed the noqa: E722 comment that was suppressing the linting warning

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