Fix #4347 max-print-line should be added to string when magic tex arg is present

[James-Yu]

When there is a %!TeX options magic comment, all TeX program arguments are provided to cs.spawn as one string with { shell: true} option enabled. In such a case, prepending --max-print-line arg will supress other arguments. See https://github.com/James-Yu/LaTeX-Workshop/blob/6adc47f2049efa9c79899f5cb6e261d9089bb8bf/src/compile/build.ts#L210

There are two ways to resolve the issue:

1. Instead of unshifting the max-print-line arg, we prepend it to the arg string when creating recipe.
2. Joining arguments with space when spawning process.

Both ones are fine, and I decided to use the first to make internal variables more consistent with behavior.

Further, a unit test is designed.