Template/MVC tests fail after updating TFM to net7.0

[wtgodbe]

Templates.Test.BaselineTest.Template_Produces_The_Right_Set_Of_FilesAsync(arguments: "new react", expectedFiles: ["ClientApp/public/favicon.ico", "ClientApp/public/index.html", "ClientApp/public/manifest.json", "ClientApp/src/components/Counter.js", "ClientApp/src/components/FetchData.js", ...])

Expected file to exist, but it doesn't: ClientApp/src/reportWebVitals.js

Microsoft.AspNetCore.Mvc.FunctionalTests.HtmlGenerationTest.CacheTagHelper_BubblesExpirationOfNestedTagHelpers

Assert.Equal() Failure
↓ (pos 33)
Expected: ···ctronics
Products: Music Systems, Televisions (3)
Actual: ···ctronics
Products: Book1, Book2 (1)
↑ (pos 33)

Microsoft.AspNetCore.Mvc.TagHelpers.CacheTagHelperTest.ProcessAsync_FlowsEntryLinkThatAllowsAddingTriggersToAddedEntry

Assert.False() Failure
Expected: False
Actual: True
at Microsoft.AspNetCore.Mvc.TagHelpers.CacheTagHelperTest.ProcessAsync_FlowsEntryLinkThatAllowsAddingTriggersToAddedEntry() in /_/src/Mvc/Mvc.TagHelpers/test/CacheTagHelperTest.cs:line 539

[BrennanConroy]

This is caused by dotnet/runtime#57648 which made a breaking change to the MemoryCache on purpose.

I'm not sure if the product needs to change or just the two tests affected.

CacheTagHelper_BubblesExpirationOfNestedTagHelpers can be fixed by adding
services.AddMemoryCache(o => o.TrackLinkedCacheEntries = true); to the Startup of HtmlGenerationWebSite
and TrackLinkedCacheEntries = true to CacheTagHelperMemoryCacheFactory.

ProcessAsync_FlowsEntryLinkThatAllowsAddingTriggersToAddedEntry can be fixed by setting TrackLinkedCacheEntries to true when newing up the MemoryCacheOptions.

[Tratcher]

Offline notes: This is a product regression for cache tag helpers and we should turn TrackLinkedCacheEntries back on in MVC for this scenario.