After entering a new line, the indentation isn't completed

Type: Bug

Given a single line like:

`var db = builder.AddPostgres("postgres")`

And you hit enter after that line, in Visual Studio, it goes to a new line, but also indents with my default tab/spaces amount. In C# extension it does not indent, it just goes to the start of new line.

https://github.com/dotnet/vscode-csharp/assets/4821/e7781538-5eda-4d0f-9045-53fdd7265d84

Extension version: 2.31.16
VS Code version: Code - Insiders 1.90.0-insider (a0986b0f653c8309e8a957d53a0a5039239c6a5d, 2024-05-23T22:54:16.118Z)
OS version: Windows_NT x64 10.0.22635
Modes:

System Info

|Item|Value|
|---|---|
|CPUs|AMD Ryzen 9 3900X 12-Core Processor (24 x 3793)|
|GPU Status|2d_canvas: enabled
canvas_oop_rasterization: enabled_on
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_graphite: disabled_off
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled
webgpu: enabled|
|Load (avg)|undefined|
|Memory (System)|127.92GB (83.85GB free)|
|Process Argv|--crash-reporter-id 961e68ed-cec6-437f-8e5f-e44a8abbf88f|
|Screen Reader|no|
|VM|0%|

A/B Experiments

```
vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscod805:30301674
vsaa593cf:30376535
py29gd2263:31024238
c4g48928:30535728
962ge761:30841072
pythongtdpath:30726887
welcomedialog:30812478
pythonidxpt:30768918
pythonnoceb:30776497
asynctok:30898717
dsvsc013:30777762
dsvsc014:30777825
dsvsc015:30821418
pythontestfixt:30866404
pythonregdiag2:30926734
pythonmypyd1:30859725
pythoncet0:30859736
2e7ec940:31000449
pythontbext0:30879054
accentitlementst:30870582
dsvsc016:30879898
dsvsc017:30880771
dsvsc018:30880772
cppperfnew:30980852
pythonait:30973460
showvideot:31016890
chatpanelt:31014475
bdiig495:31013172
a69g1124:31018687
dvdeprecation:31040973
pythonprt:31036556
dwnewjupyter:31046869
impr_priority:31052045
26j00206:31048877

```