chore: target deck.gl and luma.gl 9.4 alphas

[ibgreen]

Summary

• set the Lerna version and all 17 managed public/private packages to 9.4.0-alpha.0
• move active root, module, development, example, and website manifests to deck.gl ~9.4.0-alpha.2 and luma.gl ~9.4.0-alpha.1
• update community cross-package peer ranges to ~9.4.0-alpha.0 and the root deck-to-luma peer override to the luma 9.4 alpha baseline
• align mjolnir.js with deck.gl 9.4 and use Turf 7 for the website/editable-layers dependency graph
• regenerate root and website lockfiles; intentionally retain the non-workspace Arrow development examples on deck.gl 9.2

Compatibility changes

• preserve heterogeneous trace widget types through deck.gl 9.4's stricter DeckProps['widgets'] generic
• synchronize mjolnir.js at 3.1.0-beta.3 so deck and community widget event-manager types share one class declaration

Validation

• yarn
• yarn lint
• yarn build
• yarn test — 1,414 passed, 9 skipped
• yarn test-headless — 429 passed, 5 skipped
• cd website && yarn
• cd website && yarn build
• manifest/lockfile audit: no active deck.gl/luma.gl 9.2 or 9.3 resolutions; frozen Arrow examples unchanged

Release impact

This changes the development baseline on master only. It does not publish a community 9.4 alpha.

[github-actions]

Coverage

Stmts: 51.02% | Branch: 42.11% | Funcs: 49.21% | Lines: 51.13%

Test Files 168 passed (168)

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Raise loaders.gl pins with the deck.gl alpha

On fresh root and website installs, the new deck.gl packages request loaders.gl 4.4.3 or newer, but both package.json resolution blocks still force every loaders.gl package to 4.4.1. Yarn consequently reports YN0060 compatibility mismatches and installs versions outside deck.gl's declared ranges, affecting core, layers, geo-layers, and their loader paths. Update the root and website loaders.gl resolutions and direct ranges alongside this upgrade.

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