Hide AppHost logs in E2E test script

[degenone]

Tested running the script locally and it no longer shows AppHost logs in the console.

> .\build-and-test.ps1
Waiting for the website to start...
Website is running!
Restore complete (0,4s)
  SharpSite.E2E succeeded (0,4s) → e2e\SharpSite.E2E\bin\Debug\net9.0\SharpSite.E2E.dll
[xUnit.net 00:00:00.00] xUnit.net VSTest Adapter v3.0.1+f8675c32e5 (64-bit .NET 9.0.1)
[xUnit.net 00:00:00.09]   Discovering: SharpSite.E2E
[xUnit.net 00:00:00.12]   Discovered:  SharpSite.E2E
[xUnit.net 00:00:00.14]   Starting:    SharpSite.E2E
[xUnit.net 00:00:02.31]   Finished:    SharpSite.E2E
Results File: <...>.trx
  SharpSite.E2E test succeeded (3,2s)

Test summary: total: 1; failed: 0; succeeded: 1; skipped: 0; duration: 3,2s
Build succeeded in 4,6s
Build and tests completed successfully!

It will create a output.log file but .log files are already ignored in .gitignore, so I think it shouldn't cause issues.

[csharpfritz]

This appears to be blocking the script from completing in the GitHub Action runner. We may need to abandon this PR