chore: fix --watch.include option of dev scripts

[hi-ogawa]

Description

While experimenting with browser package code, I noticed that pnpm dev is not picking up the change of some files.

I assumed --watch.include hasn't been updated after getting more files there, so I updated the options to align with other places such as:

vitest/packages/coverage-istanbul/package.json

Line 41 in f13fa9c

"dev": "rollup -c --watch --watch.include 'src/**'",

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Tests

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[AriPerkkio]

Similar changes were done to other packages as well earlier last year: #2424