OCIS Web doesn't warn a user about closing a window with an active upload

[prohtex]

Describe the bug

OCIS Web doesn't warn a user about closing a window with an active upload

Steps to reproduce

1. Begin upload
2. Close Window

Expected behavior

When user closes a browser window with an active upload, an error warns the user about the active upload.

Actual behavior

Window is closed and upload fails

Setup

OCIS latest with Safari browser

[dschmidt]

c.f.

web/packages/web-pkg/src/components/AppTemplates/AppWrapper.vue

Lines 151 to 163 in 9444050

	const preventUnload = (e) => {
	e.preventDefault()
	e.returnValue = ''
	}
	watch(isDirty, (dirty) => {
	// Prevent reload if there are changes
	if (dirty) {
	window.addEventListener('beforeunload', preventUnload)
	} else {
	window.removeEventListener('beforeunload', preventUnload)
	}
	})

[kulmann]

@jacob-nv maybe something for you?

[AlexAndBear]

@kulmann @jacob-nv sorry, I was already on it