chore: update @langchain/community dependency to version 0.3.58 and add math-expression-evaluator package

[dragos199993]

Note

Updates @langchain/community to ^0.3.58 and refreshes yarn.lock, replacing expr-eval with math-expression-evaluator.

• Dependencies:
  • Bump @langchain/community from ^0.3.3 to ^0.3.58 in package.json.
• Lockfile:
  • Update yarn.lock to reflect new version.
  • Replace transitive expr-eval with math-expression-evaluator.

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