fix(nextjs-config): fix windows execution

[hpouillot]

Problem

#2333

Changes

• add shell option to spawn to support windows execution

Release info Sub-libraries affected

Libraries affected

• All of them
• posthog-js (web)
• posthog-js-lite (web lite)
• posthog-node
• posthog-react-native
• @posthog/react
• @posthog/ai
• @posthog/nextjs-config

Checklist

• Tests for new code
• Accounted for the impact of any changes across different platforms
• Accounted for backwards compatibility of any changes (no breaking changes!)
• Took care not to unnecessarily increase the bundle size

If releasing new changes

• Ran pnpm changeset to generate a changeset file
• Added the "release" label to the PR to indicate we're publishing new versions for the affected packages

[vercel]

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Project	Deployment	Preview	Updated (UTC)
posthog-js	Ready	Preview	Sep 18, 2025 4:58pm

[greptile-apps]

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[github-actions]

Download bundle size visualization

[github-actions]

Size Change: +42 B (0%)

Total Size: 5.36 MB

Filename	Size	Change
packages/nextjs-config/dist/utils.js	6.06 kB	+21 B (+0.35%)
packages/nextjs-config/dist/utils.mjs	3.54 kB	+21 B (+0.6%)

ℹ️ View Unchanged

Filename	Size	Change
packages/ai/dist/anthropic/index.cjs	16.7 kB	0 B
packages/ai/dist/anthropic/index.mjs	16.5 kB	0 B
packages/ai/dist/gemini/index.cjs	15.9 kB	0 B
packages/ai/dist/gemini/index.mjs	15.8 kB	0 B
packages/ai/dist/index.cjs	118 kB	0 B
packages/ai/dist/index.mjs	117 kB	0 B
packages/ai/dist/langchain/index.cjs	39.6 kB	0 B
packages/ai/dist/langchain/index.mjs	39 kB	0 B
packages/ai/dist/openai/index.cjs	29 kB	0 B
packages/ai/dist/openai/index.mjs	28.7 kB	0 B
packages/ai/dist/vercel/index.cjs	21.9 kB	0 B
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packages/browser/dist/array.full.es5.js	317 kB	0 B
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packages/browser/dist/array.full.no-external.js	397 kB	0 B
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packages/browser/dist/array.no-external.js	194 kB	0 B
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packages/browser/dist/customizations.full.js	19.1 kB	0 B
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packages/browser/dist/lazy-recorder.js	147 kB	0 B
packages/browser/dist/main.js	179 kB	0 B
packages/browser/dist/module.full.js	380 kB	0 B
packages/browser/dist/module.full.no-external.js	397 kB	0 B
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packages/core/dist/error-tracking/coercers/error-event-coercer.mjs	627 B	0 B
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packages/core/dist/error-tracking/coercers/string-coercer.js	2.15 kB	0 B
packages/core/dist/error-tracking/coercers/string-coercer.mjs	956 B	0 B
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packages/core/dist/error-tracking/index.mjs	152 B	0 B
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packages/core/dist/error-tracking/parsers/base.mjs	697 B	0 B
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packages/core/dist/error-tracking/parsers/index.mjs	2.12 kB	0 B
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packages/core/dist/error-tracking/parsers/react-native.js	203 B	0 B
packages/core/dist/error-tracking/parsers/react-native.mjs	0 B	0 B	🆕
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packages/core/dist/error-tracking/parsers/safari.mjs	574 B	0 B
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packages/core/dist/error-tracking/types.mjs	131 B	0 B
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packages/core/dist/error-tracking/utils.mjs	604 B	0 B
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packages/core/dist/testing/test-utils.mjs	1.05 kB	0 B
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packages/core/dist/utils/index.mjs	1.95 kB	0 B
packages/core/dist/utils/number-utils.js	2 kB	0 B
packages/core/dist/utils/number-utils.mjs	735 B	0 B
packages/core/dist/utils/promise-queue.js	2 kB	0 B
packages/core/dist/utils/promise-queue.mjs	768 B	0 B
packages/core/dist/utils/string-utils.js	1.91 kB	0 B
packages/core/dist/utils/string-utils.mjs	414 B	0 B
packages/core/dist/utils/type-utils.js	6.94 kB	0 B
packages/core/dist/utils/type-utils.mjs	3.03 kB	0 B
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