[browser] Soft fingerprint for boot config

[maraf]

Before this change we apply only hard fingerprint on boot config if users opt-in (WasmFingerprintBootConfig or WriteImportMapToHtml).
This means that hosted blazor won't have soft fingerprint on boot config.

This PR adds soft fingerprint if wasm assets are to be fingerprinted (default behavior) and hard fingerprint if users opt-in.

Added comments

• WasmFingerprintAssets
  • true = wasm assets will have hard fingerprint
  • false = wasm assets won't have even soft fingerprint
• WasmFingerprintBootConfig
  • true = boot config will have hard fingerprint
  • false = boot config will have soft fingerprint
• WasmFingerprintDotnetJs
  • true = dotnet.js will have hard fingerprint
  • false = dotnet.js will have soft fingerprint

Contributes to dotnet/aspnetcore#59456

Copilot wasn't able to review any files in this pull request.

Files not reviewed (1)

• src/mono/nuget/Microsoft.NET.Sdk.WebAssembly.Pack/build/Microsoft.NET.Sdk.WebAssembly.Browser.targets: Language not supported