Some Unicode characters collide in VS Code Explorer view but not on file system

Issue Type: <b>Bug</b> Directory names with the Kelvin character (`U+212A`) collide with directory names with the lowercase K character (`k`). In my view, the directory with the Kelvin character is visible in the Explorer view but the lowercase version is completely hidden. If you add a suffix to differentiate the two folder names (e.g. `_1` and `_2` suffixes), then both are visible.  Here is a directory that reproduces the issue: [repro.zip](https://github.com/microsoft/vscode/files/8092281/repro.zip)  Here is the directory listing according to `cmd /b /s` (which aligns with the Windows File Explorer view) ``` C:\Users\jver\Desktop\repro>dir /b /s C:\Users\jver\Desktop\repro\jver.unicodeid_k C:\Users\jver\Desktop\repro\jver.unicodeid_K C:\Users\jver\Desktop\repro\jver.unicodeid_k\1.0.1 C:\Users\jver\Desktop\repro\jver.unicodeid_k\1.0.1\a8cc126a2e63461391df462e5df7bc41-delete.audit.v1.json C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1 C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1\a7f051038e6a4fa8ab98230e28358566-delete.audit.v1.json C:\Users\jver\Desktop\repro\jver.unicodeid_K\1.0.1\c7d063ae2b694ee1b2688f686c004ee6-delete.audit.v1.json ``` VS Code version: Code 1.64.2 (f80445acd5a3dadef24aa209168452a3d97cc326, 2022-02-09T22:02:28.252Z) OS version: Windows_NT x64 10.0.19044 Restricted Mode: No <details> <summary>System Info</summary> |Item|Value| |---|---| |CPUs|Intel(R) Core(TM) i7-1065G7 CPU @ 1.30GHz (8 x 1498)| |GPU Status|2d_canvas: enabled<br>gpu_compositing: enabled<br>multiple_raster_threads: enabled_on<br>oop_rasterization: enabled<br>opengl: enabled_on<br>rasterization: enabled<br>skia_renderer: enabled_on<br>video_decode: enabled<br>vulkan: disabled_off<br>webgl: enabled<br>webgl2: enabled| |Load (avg)|undefined| |Memory (System)|31.5…