Fix text jumping from one line -> two line when scrolling

The issue this happens is because the paint letter spacing can change during checkForEllipsis()
so during vertical calculation for two line, set the paint letter spacing to the MIN_LETTER_SPACING that is used
in checkForELlipsis()

bug: 303319642
Test: After: https://drive.google.com/file/d/14YfmEWNpmllSAdLeUamUpewa8ljbqXAU/view?usp=sharing
before: https://drive.google.com/file/d/14Y_I-iuyOGHCr809AlqNL8o1IdFjk3_8/view?usp=sharing
Flag: disabled
Change-Id: I1f56a9e9d22ab45b0491e5fa65b5bfc5b10fc720