Unable to select content of last folded section if file ends with a folded section

[michaelt42]

Issue Type: Bug

1. Create a new file
   
2. Collapse the last folding section so the file ends with a collapsed section
   
3. Select all, cut, paste

Expected result, original text
Actual result, content of last folded section missing

VS Code version: Code 1.38.1 (b37e54c, 2019-09-11T13:35:15.005Z)
OS version: Windows_NT x64 10.0.18362

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (8 x 3408)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software oop_rasterization: disabled_off protected_video_decode: unavailable_off rasterization: enabled skia_deferred_display_list: disabled_off skia_renderer: disabled_off surface_synchronization: enabled_on video_decode: enabled viz_display_compositor: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	31.92GB (27.76GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (6)

Extension	Author (truncated)	Version
vscode-docker	ms-	0.8.1
duffle-vscode	ms-	0.3.0
python	ms-	2019.9.34911
remote-wsl	ms-	0.39.5
powershell	ms-	2019.9.0
vscode-yaml	red	0.5.3

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• [folding] Move line up/down should skip over folded regions or folded sections (#63972)
• [folding] Fold All in selection (#74360)
• Code folding, (#79191)
• [folding] show folding actions at the end of folding range as well (#60670)

[aeschli]

dup of #41744