Quarantine BlazorWebTemplateTest.BlazorWebTemplate_Works

## Failing Test(s)

`BlazorTemplates.Tests.BlazorWebTemplateTest.BlazorWebTemplate_Works`

## Error Message

```text
Tests failed: Templates.Blazor.Tests_net11.0_x64.html [net11.0|x64]
(Error messages not available in AzDO test results for this non-Helix test run)
```

## Stacktrace

Stack Trace

```text
Not available - test runs locally on Windows agent without Helix console log capture.
Previous similar failures (issues #66292, #66293) showed:
at Templates.Test.Helpers.Project.RunDotNetNewAsync(String templateName, ...) in Project.cs
at BlazorTemplates.Tests.BlazorTemplateTest.CreateBuildPublishAsync(...)
```

## Logs

Console log

```text
BlazorWebTemplate_Works - Failed (all InlineData variants)

All template tests in build 1388488 fail together, strongly suggesting
a template infrastructure issue (same pattern as NU1603 DevServer version
resolution failures tracked in #66292 and #66293).
```

## Build

https://dev.azure.com/dnceng-public/public/_build/results?buildId=1388488

Also failed in build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1363350

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