[RTL] Fix align_to_row for the last table row.

[bruvzg]

Fixes baseline-to-baseline alignment for last table row:

e.g., test [table=1,l,l,2][cell]aa[/cell][cell]aa[/cell][cell]aa[/cell][/table]test - table settings: 1 column, alignment baseline-to-baseline (l,l), to the row with index 2.

Before	After

[akien-mga]

Thanks!