Invoking completions in the middle of tag helper attribute results in empty completions window

[DoctorKrolic]

Describe the bug: In any other context, e.g. middle of html attribute, or middle of C# keyword or whatever else, when no completions are available completion window doesn't appear at all. So I think, it will be nice to not show it in razor context as well for feature parity reasons

Version used: VS 2022 v17.3 Preview 2

To reproduce: Manually invoke completions in the middle of tag helper attribute (ctrl + space)

Expected behavior: No completion window appears

Actual behavior: Completion window appears but says "No completions available"

Demo: This is non-english VS localization, but you got the idea

[ryanbrandenburg]

Now that we have single server completion this is possible.

[ryanbrandenburg]

When you complete this item verify that it also fixes https://github.com/dotnet/razor-tooling/issues/6578, and re-open that issue if it does not.

[davidwengier]

This is fixed in 17.4 Preview