Add note about RID being ignored when publishing for solution

[BartoszKlonowski]

This pull request fixes #50258, by adding the note about RIDs (specified by -r param) being "ignored" when publishing for the whole solution.
Instead, what is also suggested in the added note, publishing should be done per project regarding specific RIDs details or by specifying RIDs per project using (linked in the note) <RuntimeIdentifiers> property in the config.

I didn't make the note by markdown > [!NOTE], because I wasn't sure about the layout of bullet points already there, so let me know in comments in case this would be a good idea.

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Internal previews

📄 File	🔗 Preview link
docs/core/tools/dotnet-publish.md	dotnet publish

[meaghanlewis]

@BartoszKlonowski thanks for your contribution! I think using the markdown note format makes sense. I applied that as a suggestion along with a few others.

[meaghanlewis]

Suggested change

	**Note**, that publishing can be done on the *solution* level and on the single *project* level. When publishing from the *solution* level (by specifying optional `<SOLUTION>` parameter or leaving it default) MSBuild first compiles the output into `publish` directory **without** any symbols, which means that later compilations done by MSBuild, based on the initial compilation, will still not include any details for specified `<RUNTIME_IDENTIFIER>`.
	> [!NOTE]
	> Publishing can be done on the *solution* level and on the single *project* level. When publishing from the *solution* level by specifying the optional `<SOLUTION>` parameter or leaving it default, MSBuild first compiles the output into the `publish` directory **without** any symbols. This means that later compilations done by MSBuild, based on the initial compilation, will still not include any details for specified `<RUNTIME_IDENTIFIER>`.

[meaghanlewis]

Suggested change

	<br/>This is expected behavior, and to avoid it either publish for a single project (by specifying optional `<PROJECT>` parameter) regarding your RID, or specify RIDs directly in the project config by adding [`<RuntimeIdentifiers>`](../project-sdk/msbuild-props.md#runtimeidentifiers) property.
	> This is expected behavior. To avoid this behavior either publish for a single project by specifying the optional `<PROJECT>` parameter for your RID or specify RIDs directly in the project config by adding the [`<RuntimeIdentifiers>`](../project-sdk/msbuild-props.md#runtimeidentifiers) property.