feat: add useDefineForClassFields playground fixture and pass tsconfig to Rolldown

[Brooooooklyn]

• Add tsconfig.base.json with useDefineForClassFields: false (non-standard name to test extends chain resolution)
• Add CasesComponent fixture with inject(), private fields (#view), and field cross-references
• Pass tsconfig to Rolldown via resolvedConfig.build.rolldownOptions.tsconfig
• Wire CasesComponent into playground routes

Close #73

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

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Note

Medium Risk
Touches build tooling configuration by injecting tsconfig into Rolldown and upgrades core toolchain dependencies (Vite/Rolldown), which could subtly affect bundling behavior across environments.

Overview
Adds support in @oxc-angular/vite to forward options.tsconfig into Vite’s build.rolldownOptions.tsconfig, enabling Rolldown to resolve TypeScript settings/extends chains during builds.

Updates the playground to include a tsconfig.base.json (with useDefineForClassFields: false) and a new CasesComponent route/fixture exercising inject(), native/private class fields, and cross-field initialization order.

Bumps workspace Vite to 8.0.0-beta.16 (and related lockfile updates for rolldown/lightningcss).

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[Brooooooklyn]

• feat: add useDefineForClassFields playground fixture and pass tsconfig to Rolldown #82 👈 (View in Graphite)
• main

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