fix(web): translate Blend faucet toast messages

[Caneryy]

Summary

• useBlendFaucet.ts's toast strings for the faucet funding flow were hardcoded English literals while every other toast in the app goes through t()
• Added vaultActions.fundingWallet, vaultActions.walletFunded, and vaultActions.faucetFailed keys to en.json/fr.json and swapped the hardcoded strings for t() calls

Test plan

• pnpm lint && pnpm typecheck && pnpm test pass locally

Closes #426

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[collinsezedike]

The PR title (feat(meridian): bug-hardcoded-untranslated-toast-strings-in-the-) reads like it got truncated or auto-slugified rather than written out. Please fix it to match your own commit header format, since this repo squash-merges using the PR title as the permanent commit message. Something like fix(web): translate Blend faucet toast messages would work.

The code itself is correct and CI is green, this is purely about the title before merge.

[collinsezedike]

This PR's body doesn't follow CONTRIBUTING.md's PR body format (see "Pull Request Process" > "PR body format").

The Summary section should describe what changed and why, not restate the issue title. The Test plan checkboxes should be checked once you've actually run pnpm lint && pnpm typecheck && pnpm test locally, and the second line should say what you manually verified, not generic placeholder text.

Please update the PR body to reflect what you actually did and verified before this is merged.

[collinsezedike]

Summary of what was fixed to get this ready:

• Rebased onto current main, this branch predated the hook-decomposition merge, so useVaultActions.ts's faucet code had since moved to useBlendFaucet.ts. Reapplied the same fix (3 i18n keys, t() calls) against the current file.
• PR title: fix(web): translate Blend faucet toast messages.
• PR body: filled in Summary and Test plan properly.

Thank you for the contribution. Feel free to grab another open issue.

Merging now.