Fix canonicalize crash with plugin component values (#20052)

## Summary

Fixes #20051.

The collapse canonicalization pass speculatively checks compatible
functional utility roots. When one of those roots comes from a plugin
registered with `matchComponents`/`matchUtilities`, the speculative
candidate can call the plugin callback with an arbitrary value that is
not present in the configured `values` map. Plugins such as the Phoenix
Heroicons helper expect the mapped value shape and can throw while
canonicalize is only probing possible replacements.

This change skips speculative replacement utilities whose property
lookup throws, matching the best-effort behavior already used by utility
signature generation. The original candidates are preserved instead of
crashing canonicalization.

## Test plan

- `source ~/.nvm/nvm.sh && nvm use 22.14.0 && pnpm vitest run
packages/tailwindcss/src/canonicalize-candidates.test.ts -t "does not
crash when plugin matchComponents rejects speculative values during
collapse"`
- `source ~/.nvm/nvm.sh && nvm use 22.14.0 && pnpm vitest run
packages/tailwindcss/src/canonicalize-candidates.test.ts`
- `source ~/.nvm/nvm.sh && nvm use 22.14.0 && pnpm prettier --check
packages/tailwindcss/src/canonicalize-candidates.ts
packages/tailwindcss/src/canonicalize-candidates.test.ts`

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Co-authored-by: Robin Malfait <malfait.robin@gmail.com>