Repository: vscode
Issue: Support `window.activeBorder` natively
Labels: feature-request,upstream,themes,electron,workbench-window,keep

Issue Type: <b>Bug</b>

Does this issue occur when all extensions are disabled?: Yes

Windows 11 has these snazzy new rounded borders that are interfering with the window.activeBorder setting in settings.json.

Back on Windows 10 these settings worked fine: my window's border was set to the color indicated.

```
workbench.colorCustomizations": {
        // Default border windows (since I mostly like dark themes)
        "window.activeBorder": "#66ffff",
        "window.inactiveBorder": "#fcfcfc",
        // Some dark/light window borders, in case I delete/lose the above ones:
        "[Solarized Dark]": {
            "window.activeBorder": "#66ffff",
            "window.inactiveBorder": "#fcfcfc"
        },
        "[Solarized Light]": {
            "window.activeBorder": "#000000",
            "window.inactiveBorder": "#737373"
        },
        "[Base16 Ocean Deep]": {
            "editorError.background": "#7c0b0b8c",
            "editorError.foreground": "#ffffff"
        }
    },
```

On Windows 11 VSCode is _trying_ to set the border color, but Win11's rounded window edges appear to be obscuring it in an unpredictable pattern:

To reproduce: 
1) edit settings.json to include the above snippet.
2) Resize the window to make it smaller
3) Notice that the window borders are NOT the indicated color
![image](https://user-images.githubusercontent.com/551619/175794703-8b655ba4-093f-46ba-9447-0ebe34c931bd.png)

4) Resize the window to make it bigger
5) Notice that the window border DOES change, but only on the bottom and right edges:
![image](https://user-images.githubusercontent.com/551619/175794698-ff36d1c5-ac1f-4586-a10b-5c5ca761daea.png)

Here's an animated gif showing the unpredictable nature of the border-hiding:


![activeWindow_border_bug](https://user-images.githubusercontent.com/551619/175794754-f0677d75-d2c0-4aed-8b61-7a892235055a.gif)

VS Code version: Code 1.68.1 (30d9c6cd9483b2cc586687151bcbcd635f373630, 2022-06-14T12:48:58.283Z)
OS version: Windows_NT x64 10.0.22000
Restricted Mode: No

<details>
<summary>System Info</summary>

|Item|Value|
|---|---|
|CPUs|11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz (8 x 1805)|
|GPU Status|2d_canvas: enabled<br>canvas_oop_rasterization: disabled_off<br>direct_rendering_display_compositor: disabled_off_ok<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>oop_rasterization: enabled<br>opengl: enabled_on<br>rasterization: enabled<br>raw_draw: disabled_off_ok<br>skia_renderer: enabled_on<br>video_decode: enabled<br>video_encode: enabled<br>vulkan: disabled_off<br>webgl: enabled<br>webgl2: enabled|
|Load (avg)|undefined|
|Memory (System)|31.73GB (18.68GB free)|
|Process Argv|--crash-reporter-id 6eb40b8f-3477-4175-8780-b523dc07d617|
|Screen Reader|no|
|VM|0%|
</details><details>
<summary>A/B Experiments</summary>

```
vsliv368cf:30146710
vsreu685:30147344
python383:30185418
vspor879:30202332
vspor708:30202333
vspor363:30204092
vswsl492:30256859
vslsvsres303:30308271
pythonvspyl392:30443607
vserr242cf:30382550
pythontb:30283811
vsjup518:30340749
pythonptprofiler:30281270
vshan820:30294714
vstes263:30335439
vscorecescf:30445987
pythondataviewer:30285071
vscod805:30301674
binariesv615:30325510
bridge0708:30335490
bridge0723:30353136
vsaa593:30376534
vsc1dst:30438360
pythonvs932:30410667
wslgetstarted:30449410
vscscmwlcmt:30465135
cppdebug:30492333
vsclangdc:30486549

```

</details>

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