Some characters in:
[hebrew.pdf](https://github.com/mozilla/pdf.js/files/5869562/hebrew.pdf)
are not correct in the text layer (such as question marks).

We get text direction in `evaluator.js` but we don't use it.
It was used in the past, but it seems it has been removed:
https://github.com/mozilla/pdf.js/commit/5bd8a83c9bd7c23003b09e1cfd71422c6b083826#diff-579f2fb8055052aa97906d5fc75aeee84aa7dd9f8efcca24d8a5460d828e1de8L170

let i = 0;
      while (i < horizon.length && horizon[i].end <= boundary.y1) {
        i++;
      }
      let j = horizon.length - 1;
      while (j >= 0 && horizon[j].start >= boundary.y2) {
        j--;
      }
      let horizonPart, affectedBoundary;
      let q,
        k,
        maxXNew = -Infinity;
      for (q = i; q <= j; q++) {
        horizonPart = horizon[q];
        affectedBoundary = horizonPart.boundary;
        let xNew;
        if (affectedBoundary.x2 > boundary.x1) {
          
          
          
          xNew =
            affectedBoundary.index > boundary.index
              ? affectedBoundary.x1New
              : boundary.x1;
        } else if (affectedBoundary.x2New === undefined) {
          
          
          xNew = (affectedBoundary.x2 + boundary.x1) / 2;
        } else {