enable EndToEnd_NoAPI_ProjectType and revert framework targetting

[SimaTian]

Since the sdk now targets net10.0 and container images are not ready yet, we've had to introduce a makeshift solution to target framework net9.0 manually after dotnet new ... is done.
This is a reminder for us to revert these changes and enable affected tests after the net10.0 container images are ready, which should happen at ~February '25.
This is the PR with the changes that we will need to clean up after.

[dotnet-issue-labeler]

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[dotnet-issue-labeler]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.