fix: latest rustup-init requires comma-separated list of component

[forestaa]

Description

zinit-annex-rust failed to clone repositories, because the latest rustup-init requires comma-separated list of component since rust-lang/rustup#4076.

rustup-init 1.28.1 (bb9441b61 2025-03-05)

The installer for rustup

Usage: rustup-init[EXE] [OPTIONS]

Options:
  -v, --verbose
          Set log level to 'DEBUG' if 'RUSTUP_LOG' is unset
  -q, --quiet
          Disable progress output, set log level to 'WARN' if 'RUSTUP_LOG' is unset
  -y
          Disable confirmation prompt
      --default-host <DEFAULT_HOST>
          Choose a default host triple
      --default-toolchain <DEFAULT_TOOLCHAIN>
          Choose a default toolchain to install. Use 'none' to not install any toolchains at all
      --profile <PROFILE>
          [default: default] [possible values: minimal, default, complete]
  -c, --component <COMPONENT>
          Comma-separated list of component names to also install
  -t, --target <TARGET>
          Comma-separated list of target names to also install
      --no-update-default-toolchain
          Don't update any existing default toolchain after install
      --no-modify-path
          Don't configure the PATH environment variable
  -h, --help
          Print help
  -V, --version
          Print version

Related Issue(s)

Motivation and Context

Usage examples

zinit ice rustup cargo'!lsd'
zinit load zdharma-continuum/null

How Has This Been Tested?

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• Bug fix (non-breaking change which fixes an issue)
• Documentation change
• New feature (non-breaking change which adds functionality)

Checklist:

• All new and existing tests passed.
• I have added tests to cover my changes.
• I have updated the documentation accordingly.

[pschmitt]

thx