[Hrushikesh Ramilla (Hrushikesh-ramilla)]

Description

Fixes #3857.

When integer parameters (such as seed on RandomCapitalLettersConverter) are coerced from string inputs in coerceToken, values exceeding the safe integer range (Number.MAX_SAFE_INTEGER / Number.MIN_SAFE_INTEGER) were previously accepted by Number.isInteger, causing JavaScript's IEEE-754 representation to silently round them into different integers (e.g. 9007199254740993 becoming 9007199254740992).

This change adds a Number.isSafeInteger check to coerceToken for typeName === 'int', returning an error (${paramName} must be a safe integer.) when values exceed supported safe integer bounds, preventing silent mutation of reproducibility seeds and integer configurations.

Tests and Documentation

• Added unit tests in frontend/src/components/Parameters/parameterForm.test.ts verifying rejection of unsafe integers above Number.MAX_SAFE_INTEGER and below Number.MIN_SAFE_INTEGER, as well as acceptance of safe integer boundary values (9007199254740991 and -9007199254740991).
• Added unit test in parameterForm.test.ts verifying rejection of unsafe integers in list[int] parameters.
• Added dialog integration test case in frontend/src/components/Registry/CreateConverterDialog.test.tsx verifying that entering 9007199254740993 for seed surfaces the safe integer validation error and aborts submission.
• Verified all unit and dialog tests pass with Jest, and ran npm run type-check and npm run lint.

[Copilot]

🟢 Approval recommended

No active review issues are reported for the change to reject unsafe integer inputs before submission.

No open issues 🎉

What changed in this PR

Fixes #3857 by rejecting integer form inputs outside JavaScript’s safe integer range, preventing silent rounding of seeds and other integer parameters before submission.

Changes:

• Adds Number.isSafeInteger validation with a dedicated error message.
• Tests unsafe scalar and list values, plus valid safe-integer boundaries.
• Extends dialog coverage to verify unsafe seed input blocks submission.

File	Description
frontend/​src/​components/​Registry/​CreateConverterDialog.test.tsx	Verifies unsafe seed input displays an error and prevents submission.
frontend/​src/​components/​Parameters/​parameterForm.ts	Rejects unsafe integers during parameter coercion.
frontend/​src/​components/​Parameters/​parameterForm.test.ts	Tests unsafe integer rejection and safe boundary acceptance.

_{Review effort: Balanced}