fix: #3626557 bs_base_bs_update_200006() removes only part of the BS4 imports

Ivica Puljicrequested to merge
issue/bs_base-3626557:3626557-bsbasebsupdate200006-removes-only into 2.0.x

Adds bs_base_bs_update_200013() for themes already past 200006.

Closes #3626557

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