feat(release): add Studio dev preview network

[MuncleUscles]

Delivery context

Depends-On:

• feat(release): add Studio dev preview channel genlayer-js#217

Problem and outcome

The Consensus v0.6 / Studio v0.123 candidate needs an explicit CLI network for the preview deployment. Reusing or retargeting stable studionet would bind users to the wrong chain identity.

This adds built-in studio-dev, sourced from the JS SDK's studioDevnet, while keeping studionet unchanged. It also makes the already-safe prerelease publish policy directly testable and standardizes the next candidate on npm dist-tag rc.

Implementation and validation

• Add studio-dev to built-in network resolution and selection.
• Pin the exact merged JS chore(deps): update dependency vite to v6 - autoclosed #217 commit, facd9e9dc9a289d0110fe3b5b1a14a2938fe6e01.
• Verify chain ID 61997, canonical RPC, shared deployed consensus addresses, and stable Studionet non-drift.
• Exclude both Studio environments from validator staking setup.
• Resolve stable/prerelease npm channels in a directly tested helper.
• Publish 0.40.0-rc.3 under npm dist-tag rc, never latest.
• Keep studio-next browser-only; it is intentionally not another CLI network.

Validated locally on head 9ca9cf9:

• clean npm ci from the merged JS SHA and production build
• full suite: 76 files / 825 tests
• focused preview-network and release-channel tests: 59/59
• git diff --check

Planned prerelease after this PR merges: v0.40.0-rc.3 from v0.40-dev.

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