fix(tests): avoid clippy approx_constant lint in test assertions

[echobt]

Changes

• Replace 3.14 with 3.125 in test assertions to avoid clippy's approx_constant lint
• This prevents false positives where clippy incorrectly suggests using std::f64::consts::PI when we're just testing with arbitrary decimal values

Testing

• All cargo tests pass
• Clippy passes with no errors
• Project compiles successfully

Verification

cargo check --all          # Passes
cargo test --all           # Passes  
cargo clippy --all --all-targets  # Passes (no errors)
cargo fmt --all --check    # Passes

Summary by CodeRabbit

• Tests
  • Updated test expectations for floating-point number handling to reflect actual values.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR updates test expectations in two files, changing expected floating-point values from 3.14 to 3.125 across tests for JSON canonicalization and storage value conversions. No production code or public APIs are modified.

Changes

Cohort / File(s)	Summary
Test Expectations crates/distributed-storage/src/submission.rs, crates/storage/src/types.rs	Updated test expected values from 3.14 to 3.125 for floating-point number handling in JSON canonicalization and StorageValue f64 conversions.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐰 Three point one-four meets three point one-two-five,
A floating-point correction helps tests survive,
No logic bends, no code does change,
Just numbers shifting—perfectly arranged! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the primary change: replacing test literals (3.14 with 3.125) to avoid clippy's approx_constant lint.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/clippy-approx-constant

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