[IE8] Ignored tests related to fake selection have to be checked

[Piotrek Koszuliński]

Currently ignored:

	'/dt/core/style/editor.html#test apply inline style on non-editable inline element - at non-editable inline boundary':
		'env.ie && env.version == 8',
	'/dt/core/style/editor.html#test remove inline style from non-editable inline element - at non-editable inline boundary':
		'env.ie && env.version == 8',
	'/dt/plugins/indent/indent.html#test indent next to inline non-editable':
		'env.ie && env.version == 8',

We thought that they will be fixed by #11042, but nothing has changed.

Perhaps related issue: #7895.