Should not publish the files in SymbolPublishingExclusionFile.txt

[epananth]

To double check:

• The right tests are in and and the right validation has happened. Guidance: https://github.com/dotnet/core-eng/tree/master/Documentation/Validation

sdk Test -> https://dev.azure.com/dnceng/internal/_build/results?buildId=1272580&view=logs&j=ba23343f-f710-5af9-782d-5bd26b102304&t=6e277ba4-1c1e-552d-b96f-db0aeb4be20a

[epananth]

cc : @garath another test against this dotnet/installer#10685 changes will be good.

[epananth]

Probably I will add a FAQ, on how to use this feature in product repos

[epananth]

issue -> #7705

[lewing]

This looks like it broke the runtime official build https://dev.azure.com/dnceng/internal/_build/results?buildId=1283309&view=results

[epananth]

The reason this fixed failed is cos arcade needed an arcade update. So only the post build thing happened and the first part where we upload the file to the container did not happen. So I am going to recreate this PR and I am running another test in runtime to prove this.

[epananth]

Ran a runtime publishing build -> https://dev.azure.com/dnceng/internal/_build/results?buildId=1284774&view=results

Also this is the runtime build -> https://dev.azure.com/dnceng/internal/_build/results?buildId=1284469&view=results

Here is the place where the symbolsExclusion file is uploaded

This was missing the previous build, so publishing failed.