Optimize SourceLink to only run on Release builds to prevent incremental build breakage (#306)

* Initial plan

* Add SourceLink optimization for Debug builds in Library template

Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

* Remove redundant EmbedUntrackedSources property in Debug configuration

Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

* Initial plan

* Add SourceLink optimization for Debug builds in Library template

Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

* Complete rebase on master branch

Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

* Remove .rebase-marker temporary file

Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: TheAngryByrd <1490044+TheAngryByrd@users.noreply.github.com>

Author: Copilot

Content/Library/src/Directory.Build.props

@@ -24,6 +24,13 @@
             $(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
     </PropertyGroup>
 
+    <PropertyGroup Condition="'$(Configuration)' == 'Debug'">
+        <!-- Disable SourceLink for Debug builds since it breaks incremental builds. See
+        https://github.com/dotnet/sdk/issues/37371#issuecomment-2561620166 -->
+        <EnableSourceLink>false</EnableSourceLink>
+        <IncludeSourceRevisionInInformationalVersion>false</IncludeSourceRevisionInInformationalVersion>
+    </PropertyGroup>
+
     <!-- Build Quality -->
     <PropertyGroup>
         <!--