Bump Babylon.js from 9.0.0 to 9.3.4

[bghgary]

Summary

Bump Babylon.js from 9.0.0 to 9.3.4 across all package.json / package-lock.json files under Apps/.

Motivation

Recent CI runs (e.g. on #1666) show Win32_x64_D3D11 intermittently failing on the Light Projection Texture UnitTests case:

[Log] Running Light Projection Texture
[Log] First pixel off at 182856: Value: (51, 51, 53) - Expected: (46, 22, 16)
[Log] Pixel difference: 170840 pixels.
[Log] failed
##[error]Process completed with exit code -1.

Two upstream readiness bugs combine to produce this flake, and both need to land to remove it:

• Fix material readiness to gate on light texture readiness Babylon.js#18255 — "Fix material readiness to gate on light texture readiness." Shipped in Babylon.js 9.3.2.
• Fix CreateGroundFromHeightMap so scene.isReady waits for heightmap image load Babylon.js#18355 — heightmap CreateGroundFromHeightMap readiness (the async image load was not gated by addPendingData/removePendingData, so scene.isReady() could return true before the heightmap was uploaded). Shipped in Babylon.js 9.3.4.

Earlier 9.3.2 / 9.3.3 bumps on this branch picked up #18255 but the flake persisted because the heightmap race (#18355) was still present. Bumping to ^9.3.4 picks up both.

Changes

• Apps/package.json + lockfile: bump babylonjs, babylonjs-gltf2interface, babylonjs-gui, babylonjs-loaders, babylonjs-materials, babylonjs-serializers to ^9.3.4.
• Apps/UnitTests/JavaScript/package.json: bump babylonjs, babylonjs-materials, @babylonjs/core, @babylonjs/materials to ^9.3.4.
• Apps/PrecompiledShaderTest/JavaScript/package.json + lockfile: bump @babylonjs/core to ^9.3.4.

No code changes — dependency bump only.

Verification

CI on this PR is expected to go green on Win32_x64_D3D11 Light Projection Texture where it was previously flaky. Validated out-of-band on #1668 (monkey-patched 9.3.3 → 9.3.4 behavior) running LPT ×20 × 6 configs = 120/120 on Ubuntu_GCC_JSC.

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[Created by Copilot on behalf of @bghgary]

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Updates Babylon.js dependencies to address a CI regression in the Light Projection Texture unit test by moving projects under Apps/ from 9.0.0 to 9.3.2.

Changes:

• Bump babylonjs* packages in Apps/package.json to ^9.3.2.
• Bump Babylon.js packages in Apps/UnitTests/JavaScript/package.json to ^9.3.2.
• Bump @babylonjs/core in Apps/PrecompiledShaderTest/JavaScript/package.json to ^9.3.2 (and minor JSON cleanup/reordering).

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated 2 comments.

File	Description
Apps/package.json	Updates Babylon.js runtime dependency versions to 9.3.2.
Apps/UnitTests/JavaScript/package.json	Updates Babylon.js deps/devDeps to 9.3.2 for unit test project.
Apps/PrecompiledShaderTest/JavaScript/package.json	Updates @babylonjs/core to 9.3.2 for shader test project.

Files not reviewed (2)

• Apps/PrecompiledShaderTest/JavaScript/package-lock.json: Language not supported
• Apps/package-lock.json: Language not supported