FIX: Surface projection not working with HbR

[HanBnrd]

Reference issue

Fixes #487.

What does this implement/fix?

Enable to plot the surface projection with HbR by passing chroma as picks parameter of the plot_glm_surface_projection in surface_projection.

[codecov[bot]]

Codecov Report

Merging #488 (f3fb0ab) into main (9649ac9) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #488   +/-   ##
=======================================
  Coverage   95.96%   95.96%           
=======================================
  Files          65       65           
  Lines        2676     2676           
  Branches      397      397           
=======================================
  Hits         2568     2568           
  Misses         51       51           
  Partials       57       57           

Impacted Files	Coverage Δ
mne_nirs/statistics/_glm_level_first.py	87.93% <ø> (ø)

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[larsoner]

LGTM, marked for merge when green and approved the CI run, thanks in advance @HanBnrd !