Bad styling on a generic tag

[fcollonval]

The following style can break extension (for instance I'm using checkbox from material-ui and the height: auto is actually reducing the clickable area) because it does not scope down the input to the container:

jupyterlab/packages/extensionmanager/style/base.css

Lines 361 to 366 in d9506b2

	input[type='checkbox'] {
	appearance: checkbox;
	-webkit-appearance: checkbox;
	-moz-appearance: checkbox;
	height: auto;
	}

I don't really know what is the best solution to fix this as it seems that there is no more checkbox involved within the extension manager. If so I'm happy to push a PR removing this style.

[vidartf]

I agree that it should either be scoped, or if unused, removed 👍

[vidartf]

(Doing a git blame dive, I'm the original author of that block, and I cannot find any reasoning or memories for why it is unscoped, so I'm going to assume it just slipped through).

[jasongrout]

Yes, @fcollonval, please submit a PR, then.

[fcollonval]

Thanks @vidartf and @jasongrout for the feedback. I push a PR #9222 to address this issue specifically that could be backported on 2.x.