Comment-level commands do not render in Insiders

[IlyaBiryukov]

Issue Type: Bug

Commands for individual comments in the comment thread do not render in the latest Insiders.

Repro:

1. Build and run vscode-extension-samples/comment-sample
2. Create a new comment thread
3. Add some replies to the thread

Expected:
Comments on the comment thread have commands from comments/comment/title and comments/comment/context menus.

Actual:
There are no commands on the comments in the comment thread.

Note:
The issue doesn't repro on current stable VSCode 1.35.1. It only repros on the latest insiders.

VS Code version:
Code - Insiders 1.36.0-insider (11b88a3, 2019-06-17T05:17:47.485Z)
OS version: Windows_NT x64 10.0.17763

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 (13.17GB free)
Process Argv
Screen Reader	no
VM	0%

[vscodebot]

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

• Comment thread range doesn't follow the comment edit box (#74641)
• Comment UI in editor not updated properly after firing change event (#64042)
• Removing the first comment from vscode.CommentThread screws up Comments panel if the thread has more than one comment (#73147)
• Collapse + expand comments editor with text breaks its height (#69553)