This PR has very slight corrections to text cursor placement in input
widgets. The most important is a check for the situation where the
right edge of the current character can be greater than the left edge
of the next character. This can happen for some thin characters before
a space. Otherwise the code assumes RTL direction and gives an
incorrect placement. This also slightly tightens the position when at
the start of string, just after a space, or at end of the string.
Pull Request: https://projects.blender.org/blender/blender/pulls/127662
2278f8eb1b