This is to resolved cut-off in first-line when line-spacing is negative
and vertical line alignment is bottom or middle.
Testing code:
https://github.com/wonrst/NUI-Test/blob/main/text-vertical-line-align/verticalline.cs
This patch should be preceded by the patch below:
https://review.tizen.org/gerrit/c/platform/core/uifw/dali-toolkit/+/274097
Change-Id: I80e6d838ad08f7f34d79f6018bb44ae467c7a89a