Fix "Assertion failed" when calling igl::heat_geodesics_precompute using a V with fixed column count (#2419) [skip ci]
* Fix bug where `igl::heat_geodesics_precompute` will fail for `V` with a fixed number of columns.
See https://github.com/libigl/libigl/issues/2418
* Add missing call to .transpose()
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Co-authored-by: Alec Jacobson <[email protected]>
Nevsor