fix(ci,wallet): Add missing `build:rc` turbo task #6441

Job	Run time
diff	13s
dprint-format	8s
typos / Spell Check with Typos	9s
turborepo / pnpm audit	12s
turborepo / Lint, Build, and Test	1m 26s
release-notes-check	0s
docusaurus	0s
docs-lint	0s
license-check	0s
move-tests	0s
ledgernano	0s
e2e	0s
vercel-deploy / Vercel Explorer Preview	0s
vercel-deploy / Vercel Explorer Staging	0s
vercel-deploy / Vercel UI Kit Preview	0s
vercel-deploy / Vercel UI Kit Production	0s
vercel-deploy / Vercel Wallet Dashboard Preview	0s
vercel-deploy / Vercel Wallet Dashboard Production	0s
vercel-deploy / Vercel apps-backend Preview	0s
vercel-deploy / Vercel apps-backend Production	0s
rust / deny / cargo deny (bans, licenses, sources)	7s
rust / deny / cargo deny (advisories)	7s
rust / rust-lints / rustfmt	0s
rust / rust-lints / cargo-sort	0s
rust / rust-lints / clippy	0s
rust / rust-tests	0s
rust / external-tests	0s
rust / execution-cut	0s
	2m 22s

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