[release/6.0] Microsoft.Extensions.Logging.Abstractions includes unnecessary dependencies

[ViktorHofer]

Microsoft.Extensions.Logging.Abstractions references System.Memory and System.Buffers packages on net6.0 even though those libraries are part the 6.0 shared framework:

runtime/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj

Lines 33 to 36 in cbe463b

	<ItemGroup>
	<PackageReference Include="System.Buffers" Version="$(SystemBuffersVersion)" />
	<PackageReference Include="System.Memory" Version="$(SystemMemoryVersion)" />
	</ItemGroup>

These dependencies should be conditioned to not apply to the .NETCoreApp assets. Note that this is already fixed in main.
This regressed with the move from pkgprojs to the NuGet pack task as the pkgproj infrastructure stripped dependencies that weren't necessary at compile time.

Reported in #59158.

cc @pentp

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Issue Details

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Microsoft.Extensions.Logging.Abstractions references System.Memory and System.Buffers packages on net6.0 even though those libraries are part the 6.0 shared framework:

runtime/src/libraries/Microsoft.Extensions.Logging.Abstractions/src/Microsoft.Extensions.Logging.Abstractions.csproj

Line 33 in cbe463b

<ItemGroup>

.

These dependencies should be conditioned to not apply to the .NETCoreApp assets. Note that this is already fixed in main.
This regressed with the move from pkgprojs to the NuGet pack task as the pkgproj infrastructure stripped dependencies that weren't necessary at compile time.

Reported in #59158.

cc @pentp

Author:	ViktorHofer
Assignees:	ViktorHofer
Labels:	area-Extensions-Logging
Milestone:	6.0.0

[ViktorHofer]

@Anipik as this regressed with 3897ee5

@ericstj @danmoseley I would like to get a fix for this in before we snap today.