Build all samples in non-ARM GitHub MSW CI job

We can't do this when targeting ARM because all projects don't have ARM
configurations in them. To add them would require making the same
changes to all the 100+ projects as were done in f825661df1 (Improve
ARM64 support in wxMSW, 2024-06-14) in minimal.vcxproj, which will have
to wait until someone has time to automate it.

.github/workflows/ci_msw.yml

@@ -107,9 +107,10 @@ jobs:
                 $dlldir | Out-File -Append $env:GITHUB_PATH
             }
 
-      - name: Build minimal sample
+      - name: Build samples
+        if: matrix.platform != 'arm64'
         run: |
-            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} samples\minimal\minimal_vc16.sln
+            msbuild /noLogo /m '/p:Configuration=${{ matrix.configuration }}' /p:Platform=${{ matrix.platform }} samples\samples_vc16.sln
 
       - name: Build tests
         run: |