[testing] Reenable MultiProjectTemplate Test MultiProject@Symbol & More

[rmarinho]

Description

When moving to the new builds of macios 18.5 these tests started failing , disable the special test for now while we figure whats going one.

https://github.com/dotnet/maui/blob/net10.0/src/TestUtils/src/Microsoft.Maui.IntegrationTests/MultiProjectTemplateTest.cs#L9

This was working on 18.4 (preview5)

Version with bug

10.0.0-preview.6

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

10.0.0-preview.5

Affected platforms

iOS