In #19873, we completely disabled compositor recycling. This has adverse
effects in our tabbed app where switching tabs (i.e. `BrowserView`s) now
results in a flicker because we now also switch compositors.
To fix this without regressing the original fix, we now recycle the
compositor when the view is removed from a window. This situation can
only happen with `BrowserView`s and the common case with `BrowserWindow`
is unaffected.
