#7765 fix TreeMap sizing issues (#7869)
#7765 fix TreeMap sizing issues (#7869)

* WIP

* #7765 fix TreeMap resizing

* #7765 cleanup not needed methods

twosigma/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beaker-notebook,twosigma/beakerx,twosigma/beakerx,twosigma/beaker-notebook