Suppress creation of exports file when building multimodule framework (#95962)

libraries

Fixes #95961

Author: jkotas

src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.targets

@@ -81,7 +81,7 @@ The .NET Foundation licenses this file to you under the MIT license.
     <NativeObject>$(NativeIntermediateOutputPath)$(TargetName)$(NativeObjectExt)</NativeObject>
     <NativeBinary>$(NativeOutputPath)$(TargetName)$(NativeBinaryExt)</NativeBinary>
     <IlcExportUnmanagedEntrypoints Condition="'$(IlcExportUnmanagedEntrypoints)' == '' and '$(NativeLib)' == 'Shared'">true</IlcExportUnmanagedEntrypoints>
-    <ExportsFile Condition="$(ExportsFile) == ''">$(NativeIntermediateOutputPath)$(TargetName)$(ExportsFileExt)</ExportsFile>
+    <ExportsFile Condition="$(ExportsFile) == '' and '$(BuildingFrameworkLibrary)' != 'true'">$(NativeIntermediateOutputPath)$(TargetName)$(ExportsFileExt)</ExportsFile>
 
     <IlcCompileOutput>$(NativeObject)</IlcCompileOutput>