FIX: Passing surface template keywords into carpetplot workflow

Ensure only volumetric templates are passed as indexing keys into the
carpetplot-creation workflow. Fixes #1721.

Author: oesteban

fmriprep/workflows/bold/base.py

@@ -778,7 +778,7 @@ def init_func_preproc_wf(
             freesurfer=freesurfer,
             mem_gb=mem_gb['resampled'],
             omp_nthreads=omp_nthreads,
-            standard_spaces=std_spaces,
+            standard_spaces=volume_std_spaces,
             name='bold_std_trans_wf',
             use_compression=not low_mem,
             use_fieldwarp=fmaps is not None,