fix(gnovm): deep-copy array elements in ArrayValue.Copy

[thehowl]

Closes #5332

ArrayValue.Copy used Go's builtin copy() to duplicate its []TypedValue slice, which copies TypedValue structs by value. For composite element types (structs, nested arrays), this meant both the original and the copy shared the same *StructValue/*ArrayValue pointers, silently corrupting persistent realm state.

The fix mirrors StructValue.Copy, which already calls field.Copy(alloc) per element for exactly this reason. TypedValue.Copy dispatches correctly on the dynamic type: *StructValue and *ArrayValue are deep-copied, while reference-like values (slices, maps, pointers, functions) fall through to the shallow default — so interface-held reference types are handled correctly.

The gas expectation for gnovm/tests/files/gas/nested_alloc.gno is updated: building a 10000-deep [1]interface{}{x} chain now incurs O(n²) copy cost because each assignment deep-copies the entire chain, which is the correct cost under Gno's value semantics for interface-held arrays.

[Gno2D2]

🛠 PR Checks Summary

All Automated Checks passed. ✅

Manual Checks (for Reviewers):

• IGNORE the bot requirements for this PR (force green CI check)

Read More

🤖 This bot helps streamline PR reviews by verifying automated checks and providing guidance for contributors and reviewers.

✅ Automated Checks (for Contributors):

🟢 Maintainers must be able to edit this pull request (more info)

☑️ Contributor Actions:

1. Fix any issues flagged by automated checks.
2. Follow the Contributor Checklist to ensure your PR is ready for review.
   • Add new tests, or document why they are unnecessary.
   • Provide clear examples/screenshots, if necessary.
   • Update documentation, if required.
   • Ensure no breaking changes, or include BREAKING CHANGE notes.
   • Link related issues/PRs, where applicable.

☑️ Reviewer Actions:

1. Complete manual checks for the PR, including the guidelines and additional checks if applicable.

📚 Resources:

• Report a bug with the bot.
• View the bot’s configuration file.

Debug

Automated Checks

Maintainers must be able to edit this pull request (more info)

If

🟢 Condition met
└── 🟢 And
    ├── 🟢 The base branch matches this pattern: ^master$
    └── 🟢 The pull request was created from a fork (head branch repo: thehowl/gno)

Then

🟢 Requirement satisfied
└── 🟢 Maintainer can modify this pull request

Manual Checks

**IGNORE** the bot requirements for this PR (force green CI check)

If

🟢 Condition met
└── 🟢 On every pull request

Can be checked by

• Any user with comment edit permission

[omarsy]

I was working on a fix for that #5341

[omarsy]

I was working on a fix for that #5341

See It was in draft :/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!

[omarsy]

If we merge this PR should clause this #5341 and the issue #5332