chore(deps): remove redundant pnpm overrides

[ocavue]

Changes

Removes overrides field in pnpm-workspace.yaml. This is a follow-up to #16716 (comment)

1. Remove overrides > vite. This is required for the branch next where we don't want to install vite v7 at all.

2. Remove overrides > picomatch. This resolves the peer dep warning below:

   Before:

   $ pnpm --version
   11.0.9
   $ pnpm peers check
   Issues with peer dependencies found
   
   ✕ unmet peer picomatch
     Installed: 4.0.4
     Wanted:
       ^2.3.2:
         fdir@6.5.0
   
   ✕ unmet peer zod
     Installed: 4.3.6
     Wanted:
       ^3.22.4:
         simple-stack-form@0.1.12
   
   ✕ unmet peer @cloudflare/workers-types
     Installed: 4.20260228.0
     Wanted:
       ^4.20260415.1:
         wrangler@4.83.0

   After:

   $ pnpm --version
   11.0.9
   $ pnpm peers check
   Issues with peer dependencies found
   
   ✕ unmet peer zod
     Installed: 4.3.6
     Wanted:
       ^3.22.4:
         simple-stack-form@0.1.12
   
   ✕ unmet peer @cloudflare/workers-types
     Installed: 4.20260228.0
     Wanted:
       ^4.20260415.1:
         wrangler@4.83.0

Sometimes overrides field is required to tweak pnpm-lock.yaml, however, in general, it should not remain in the repository if pnpm-lock.yaml remains valid after removing overrides.

Testing

CI should pass

Docs

N/A

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Latest commit: a2f7a00

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[matthewp]

🙌