HTML files now require an extension to run

[cmrss2]

Issue Type: Bug

In the April release of VSC, this issue started to happen. Before, I could simply run with F5 and everything would work fine. Now, it tells me to install an extension for debugging, even if I run without debugging.

Steps to reproduce:

1. Run a HTML file, without debugging (Ctrl + F5)
   There should now be a prompt to install an extension.
2. Click on it, and install any of the extensions.
3. Try again, only to keep getting the prompt with any extension enabled. I've only tried 2 extensions, but it happened with both.

Cancel only cancels the entire thing. Attached are screenshots of me attempting to run without debugging.
I understand this is only a small issue, but to run directly from VSC is a large reason I chose this code editor. Please fix this!

VS Code version: Code 1.56.0 (cfa2e21, 2021-05-04T22:09:06.405Z)
OS version: Windows_NT x64 10.0.19042

System Info

Item	Value
CPUs	Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz (8 x 1800)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	7.91GB (3.51GB free)
Process Argv	--crash-reporter-id 8c746a95-70ad-4816-8370-eaf9d045842f
Screen Reader	no
VM	0%

Extensions: none

A/B Experiments

vsliv368cf:30146710
vsreu685:30147344
python383cf:30185419
pythonvspyt602:30294772
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstes627:30244334
pythonvspyt639:30291489
pythontb:30283811
vspre833:30267464
pythonptprofiler:30281270
vsdfh931cf:30280410
vshan820:30294714
pythondataviewer:30285071
vscus158cf:30286554

[Flavian97]

I do have this problem and I do not have any idea of how to fix this

[JacksonKearl]

Confirmed in 1.55.2, I could hit Ctrl+F5, select Chrome, and the HTML file would open in chrome. Now there's a popup telling me I need additional extensions.

[isidorn]

@connor4312 what do you think that we fix this in the Chrome extension so that the Chrome extensions says that it is interested in html by specifying it in the language field?

[isidorn]

@connor4312 that was fast. Thanks
What do you think about doing this as part of recovery?

[connor4312]

It looks like we'll have a recovery, and I think this is a safe change.

[isidorn]

Lovely, thanks!