Update notification comes up when opening a workspace with no C/++ files

[connor4312]

Type: General

Describe the bug

• OS and Version: Windows_NT x64 10.0.19041
• VS Code Version: 1.52.0-insider (user setup)
• C/C++ Extension Version: 1.1.1
• A clear and concise description of what the bug is: I opened a folder containing only some .js files -- no .cpp, .h, .c, Makefiles, or anything like that. When I did so, the C++ update banner came up.

To Reproduce
Steps to reproduce the behavior:

1. Open (apparently) any folder or workspace
2. The update prompt has the possibility to come up

Expected behavior
Users get very annoyed and fatigued with notifications, most of which come from various extensions they have installed.

In this case, I installed the extension a while ago to work on some C++. But I just opened a new folder that's totally unrelated to any C/++ code. I don't care at all that the extension is updating stuff at this time; I had actually forgotten I had it installed.

If it fails, I might be interested, but even then I only really care the next time I go to work on C/++ code -- which could be in a day, a week, or never again.

Screenshots

[sean-mcmanus]

We intentionally want to always download these files even if the current workspace is not C++; however, we could fix it so that the notification is hidden if the activation requirements for the C/C++ extension have not been hit.

[bobbrow]

This will no longer be an issue when #8152 is complete. We will no longer need to have a separate download process.