Fix type-checking of test/ directories

[Copilot]

TypeScript files in test/ directories (outside src/) were not being type-checked because they weren't included in package tsconfig.json files, and tsup only type-checks files in its build entries.

Changes

tsconfig.json updates

Updated tsconfig.json for packages with test/ directories:

• packages/blobs - Added "test" to include
• packages/dev - Added "test" to include
• packages/functions/prod - Added "test" to include, excluded "test/types" (contains tsd type-testing files with intentional errors)

package.json updates

Added explicit type-checking scripts to ensure test files are type-checked independently of tsup:

• packages/blobs - Added "test:ci:types": "tsc --noEmit" script that runs as part of test:ci:*
• packages/dev - Added "test:types": "tsc --noEmit" and "test:vitest": "vitest run" scripts, updated test commands to run both
• packages/functions/prod - Added "test:ci:types": "tsc --noEmit" script that runs as part of test:ci:*

Notes

• Packages with src/test/ (cache, dev-utils) already covered by "src" include
• Packages vite-plugin-tanstack-start and nuxt-module already included test directories
• Type-checking now runs via explicit tsc --noEmit commands as part of the test suite, not relying on tsup's build process

Original prompt

Issue Title: Fix lack of type-checking of test/ directories
Issue Description: Some of the netlify/primitives packages have .ts files outside their src/ directories, but not all of these have a tsconfig.json + tsup.config.ts configuration that includes these paths (e.g. test/) — thus they are not type-checked.
Fixes https://linear.app/netlify/issue/FRB-1870/fix-lack-of-type-checking-of-test-directories

Comment by User db2967f5-c49c-428b-ae14-6c61855027c1:
netlify/primitives

Comment by User c8ba5c18-8b2b-41c2-8484-9ca4ad793475:
📋 I wasn't able to determine which GitHub repository to work in.

Please tell me which repository this work should be done in using the format owner/repository-name (e.g., github/copilot), then I'll automatically start working on it!

Comment by User :
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[serhalp]

@copilot I don't believe this is sufficient, is it? because we're using tsup only, anything that isn't built/touched by a tsup entry doesn't get type-checked by anything. find an idiomatic way to solve this if you can.

[Copilot]

@copilot I don't believe this is sufficient, is it? because we're using tsup only, anything that isn't built/touched by a tsup entry doesn't get type-checked by anything. find an idiomatic way to solv...

You're right. I've added explicit tsc --noEmit type-checking scripts to the test suites for the three affected packages (blobs, dev, functions/prod). The test files are now type-checked independently of tsup's build process. See commit 0bc670a.