[ci] Remove more warnings (#30585)

### Description of Change

This pull request includes a modification to the
`Directory.Build.targets` file to adjust how specific MSBuild warnings
are handled. The change moves the `MSB4011` warning from being
suppressed to being treated as a message instead.

Build configuration changes:

*
[`Directory.Build.targets`](diffhunk://#diff-50e91c82311ea26f2a73202525dfdf2b0a89c178ee666b2bf3ad4c84ac4c06dcL29-R30):
Updated the `NoWarn` property to remove suppression of `MSB4011` and
added `MSBuildWarningsAsMessages` to treat `MSB4011` and `NETSDK1206`
warnings as messages instead.

### Issues Fixed

Fixes #

Author: rmarinho

Directory.Build.targets

@@ -26,7 +26,8 @@
   <PropertyGroup>
     <!-- Microsoft.Build.Msix.props" cannot be imported again -->
     <!-- Found version-specific or distribution-specific runtime identifier(s)-->
-    <NoWarn>$(NoWarn);MSB4011;NETSDK1206</NoWarn>
+    <NoWarn>$(NoWarn);NETSDK1206;NU1702</NoWarn>
+    <MSBuildWarningsAsMessages>$(MSBuildWarningsAsMessages);MSB4011;MSB3277;NETSDK1206;NU1702</MSBuildWarningsAsMessages>
   </PropertyGroup>
 
   <!-- platform version number information -->