Add `console.log` support for `ArrayBuffer` and `TypedArray` (Option 2)

[pkalsi97]

What?

This PR adds support for console.log for ArrayBuffer and TypedArray by implementing Option 2, replaces JSON marshaling with direct string formatting to achieve Deno-style output for console.log:

• Objects display as { key: value } instead of {"key":"value"}
• Arrays display as [ elem, elem ] instead of ["elem","elem"]
• TypedArrays display as Int32Array(2) [ 4, 2 ]
• ArrayBuffer displays as ArrayBuffer { [Uint8Contents]: <...>, byteLength: N }
• Nested TypedArray/ArrayBuffer no longer have extra quotes

Result

--- Direct Cases ---
Int32Array(2) [ 4, 2 ]
ArrayBuffer { [Uint8Contents]: <04 00 00 00 02 00 00 00>, byteLength: 8 }

--- Nested Cases ---
{ v: Int32Array(2) [ 4, 2 ] }
{ b: ArrayBuffer { [Uint8Contents]: <...>, byteLength: 8 } }

--- Regular Objects ---
{ foo: "bar" }
[ 1, 2, 3 ]

--- Complex Nested ---
{ name: "test", buffer: ArrayBuffer {...}, view: Int32Array(2) [...], nested: {...} }

Changes

• Remove json.Marshal dependency from traverseValue, it now returns string directly.
• Update all test expectations for the new output format and add new test cases for TypedArray types and ArrayBuffer

Why?

See #5469 for details.

Checklist

• [x] I have performed a self-review of my code.
• [x] I have commented on my code, particularly in hard-to-understand areas.
• [x] I have added tests for my changes.
• [x] I have run linter and tests locally (make check) and all pass.

Checklist: Documentation (only for k6 maintainers and if relevant)

• [ ] I have added the correct milestone and labels to the PR.
• [ ] I have updated the release notes: link
• [ ] I have updated or added an issue to the k6-documentation: grafana/k6-docs#NUMBER if applicable
• [ ] I have updated or added an issue to the TypeScript definitions: grafana/k6-DefinitelyTyped#NUMBER if applicable

Related PR(s)/Issue(s)

• Original Issue: https://github.com/grafana/k6/issues/5469
• New Issue (Option 2): https://github.com/grafana/k6/issues/5495
• PR Implementing Option 1: #5480

[oleiade]

Adding myself and @inancgumus to this review, as we've been collaborating with @pkalsi97 to frame this topic 🙇‍♂️

[pkalsi97]

@inancgumus nice idea, I have implemented it. Thanks!