use all TAZs when using sharrow #1129

Job	Run time
linux-64-py	6m 10s
placeholder_multiple_zone	9m 36s
macOS	6m 57s
Estimation Mode Unit Tests	24m 28s
placeholder_psrc	53m 25s
prototype_sandag_xborder	6m 8s
prototype_mwcog	58m 44s
Expression Profiling Tests	7m 46s
Estimation Notebooks Test	51m 42s
prototype_marin	1m 49s
Standard 1-Zone Example (MTC)	21m 40s
estimation_edb_creation_test	7m 7s
prototype_mtc_extended	1h 24m 52s
production_semcog	7m 3s
win-64	12m 25s
develop-docbuild	-1s
Standard 2-Zone Example (SANDAG)	12m 29s
random_seed_generation_test	3m 29s
prototype_mtc	54m 11s
	7h 10m 0s

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