fix: remove no longer relevant bootstrap-cli command from init task

[yangshun]

Description

Was trying to set up the repo by following the instructions in CONTRIBUTING.md, but encountered an error

➜  vite-task git:(main) just init
cargo binstall watchexec-cli cargo-insta typos-cli cargo-shear@1.11.1 taplo-cli -y
 INFO resolve: Resolving package: 'typos-cli'
 # Omitted
  ...
    Finished [`release` profile [optimized]](https://doc.rust-lang.org/cargo/reference/profiles.html#default-profiles) target(s) in 47.13s
  Installing /Users/yangshun/.cargo/bin/taplo
   Installed package `taplo-cli v0.10.0` (executable `taplo`)
 INFO Cargo finished successfully
 INFO Done in 53.617422084s
pnpm run bootstrap-cli
 ERR_PNPM_NO_SCRIPT  Missing script: bootstrap-cli

Issue

justfile references pnpm run bootstrap-cli under init, but there's no longer such a script in the package.json.

1. This line was originally added to the root package.json in f082903
2. The root package.json was removed in dda69c7, but the setup instructions in justinit weren't updated.

The new package.json doesn't contain the script bootstrap-cli.

Test plan

1. Removed that line from justfile
2. Ran just init
3. Command completed successfully