Remove 'unsafe-eval' in CSP guidance

[guardrex]

• Remove unsafe-eval CSP Requirement for Blazor WASM aspnetcore#37787
• Remove use of legacy interop preventing CSP compliance in Blazor WebAssembly aspnetcore#48182

---

Document Details

⚠ Do not edit this section. It is required for learn.microsoft.com ➟ GitHub issue linking.

• ID: 88177a7d-c9ff-c245-5629-a462c9258abf
• Version Independent ID: 6e0b5c52-90a1-5ca6-bfad-df33a8beae6c
• Content: Enforce a Content Security Policy for ASP.NET Core Blazor
• Content Source: aspnetcore/blazor/security/content-security-policy.md
• Product: aspnet-core
• Technology: aspnetcore-security
• GitHub Login: @guardrex
• Microsoft Alias: riande