Make DoesConsoleSupportAnsi respect DOTNET_SYSTEM_CONSOLE_ALLOW_ANSI_COLOR_REDIRECTION (#88241)

Co-authored-by: Adam Sitnik <[email protected]>

Author: hach-que

src/libraries/Microsoft.Extensions.Logging.Console/src/ConsoleLoggerProvider.cs

@@ -68,6 +68,13 @@ public ConsoleLoggerProvider(IOptionsMonitor<ConsoleLoggerOptions> options, IEnu
         [UnsupportedOSPlatformGuard("windows")]
         private static bool DoesConsoleSupportAnsi()
         {
+            string? envVar = Environment.GetEnvironmentVariable("DOTNET_SYSTEM_CONSOLE_ALLOW_ANSI_COLOR_REDIRECTION");
+            if (envVar is not null && (envVar == "1" || envVar.Equals("true", StringComparison.OrdinalIgnoreCase)))
+            {
+                // ANSI color support forcibly enabled via environment variable. This logic matches the behaviour
+                // found in System.ConsoleUtils.EmitAnsiColorCodes.
+                return true;
+            }
             if (
 #if NETFRAMEWORK
                 Environment.OSVersion.Platform != PlatformID.Win32NT