Delete commands (`deleteLeft`, `deleteRight`) don't work in dialogs

[leep-frog]

Issue Type: Bug

Steps to reproduce

1. Add the following to keybindings.json

   {
       "key": "ctrl+h",
       "command": "deleteLeft"
   },

2. Verify it works in file focus

3. Execute it in a dialog focus (find or command palette) and get unexpected result

Expectation: A character from the focused dialog should be deleted Actuality: A character from the last editor focus is deleted

When I search the binding for my backspace key in Preferences: Open Keyboard Shortcuts, it shows that backspace is bound to deleteLeft. The aforementioned result is all the more unexpected considering that the backspace key does what I expect whereas ctrl+h doesn't, even though they are "supposedly" bound to the same command.

VS Code version: Code 1.66.1 (8dfae7a5cd50421d10cd99cb873990460525a898, 2022-04-06T14:50:12.141Z) OS version: Windows_NT x64 10.0.22000 Restricted Mode: No

System Info

|Item|Value| |---|---| |CPUs|11th Gen Intel(R) Core(TM) i7-1185G7 @ 3.00GHz (8 x 2995)| |GPU Status|2d_canvas: enabled
canvas_oop_rasterization: disabled_off
direct_rendering_display_compositor: disabled_off_ok
gpu_compositing: enabled
multiple_raster_threads: enabled_on
oop_rasterization: enabled
opengl: enabled_on
rasterization: enabled
raw_draw: disabled_off_ok
skia_renderer: enabled_on
video_decode: enabled
video_encode: enabled
vulkan: disabled_off
webgl: enabled
webgl2: enabled| |Load (avg)|undefined| |Memory (System)|15.71GB (5.82GB free)| |Process Argv|--crash-reporter-id b6b63ffd-30a1-4a6a-ad59-7dbdd7de2c9f| |Screen Reader|no| |VM|0%|

Extensions (39)

Extension|Author (truncated)|Version ---|---|--- project-manager|ale|12.5.0 tsl-problem-matcher|amo|0.6.2 github-markdown-preview|bie|0.2.0 markdown-checkbox|bie|0.3.2 markdown-emoji|bie|0.2.1 markdown-footnotes|bie|0.0.7 markdown-preview-github-styles|bie|1.0.1 markdown-yaml-preamble|bie|0.1.0 gitignore|cod|0.7.0 doxdocgen|csc|1.4.0 vscode-eslint|dba|2.2.2 git-extension-pack|don|0.1.3 githistory|don|0.6.19 gitlens|eam|12.0.5 EditorConfig|Edi|0.16.4 go|gol|0.32.0 better-cpp-syntax|jef|1.15.13 Lisp|mat|0.1.12 vscode-docker|ms-|1.21.0 python|ms-|2022.4.1 vscode-pylance|ms-|2022.4.0 jupyter|ms-|2022.3.1000901801 jupyter-keymap|ms-|1.0.0 jupyter-renderers|ms-|1.0.6 remote-containers|ms-|0.231.5 remote-ssh|ms-|0.78.0 remote-ssh-edit|ms-|0.80.0 remote-wsl|ms-|0.66.0 cmake-tools|ms-|1.10.5 cpptools|ms-|1.9.7 cpptools-extension-pack|ms-|1.1.0 powershell|ms-|2021.12.0 multi-command|ryu|1.5.1 kb-macro|tsh|0.12.0 cmake|twx|0.0.17 groog|und|0.0.1 clang-format|xav|1.9.0 vscode-open-in-github|ziy|1.3.6 vscode-proto3|zxh|0.5.5 (1 theme extensions excluded)

A/B Experiments

``` vsliv368:30146709 vsreu685:30147344 python383cf:30185419 vspor879:30202332 vspor708:30202333 vspor363:30204092 vstes627:30244334 pythonvspyl392:30443607 pythontb:30283811 pythonptprofiler:30281270 vshan820:30294714 vstes263:30335439 pythondataviewer:30285071 vscod805:30301674 pythonvspyt200:30340761 binariesv615:30325510 bridge0708:30335490 bridge0723:30353136 vsaa593:30376534 vsc1dst:30438360 pythonvs932:30410667 wslgetstarted:30449410 pythonvsnew555:30457759 vscscmwlcmt:30465135 cppdebugcf:30466690 pynewfile477:30463512 ```

[leep-frog]

Also worth noting, this issue exists for other text deletion commands (deleteWordLeft, deleteWordRight, etc.) as well.

[VSCodeTriageBot]

This feature request has not yet received the 20 community upvotes it takes to make to our backlog. 10 days to go. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!

[VSCodeTriageBot]

:slightly_smiling_face: This feature request received a sufficient number of community upvotes and we moved it to our backlog. To learn more about how we handle feature requests, please see our documentation.

Happy Coding!