Fix SkiaParagraph.getLineForVerticalPosition

[m-sasha]

SkiaParagraph.getLineForVerticalPosition currently returns 0 when given a position beyond the last line. This is counter to its documentation:

Returns line number closest to the given graphical vertical position.
If you ask for a vertical position before 0, you get 0; if you ask for a vertical position
beyond the last line, you get the last line.

Proposed Changes

• Reimplement SkiaParagraph.getLineForVerticalPosition using binary search
• Make it correctly return the last line when given a large input.

Testing

Test: Added a unit test

Issues Fixed

Fixes: JetBrains/compose-multiplatform#4058