add path_gdx_refpolicycosts in scenario_config

[orichters]

Purpose of this PR

• add path_gdx_refpolicycosts cells in scenario_config, if they don't create a new run dependency which would slow down the whole cascade
• goal: to avoid that the policyCosts script has to run manually
• run codeCheck also if testOneRegi failed

Changes in the scenarios:
~ SSP2EU-NDC:
    path_gdx_refpolicycost: NA -> SSP2EU-NPi
~ SSP2EU-PkBudg500:
    path_gdx_refpolicycost: NA -> SSP2EU-NPi
~ SSP2EU-PkBudg650:
    path_gdx_refpolicycost: NA -> SSP2EU-NPi
~ SSP2EU-PkBudg1050:
    path_gdx_refpolicycost: NA -> SSP2EU-NPi
~ SSP2EU-EU21-NDC:
    path_gdx_refpolicycost: NA -> SSP2EU-EU21-NPi
~ SSP2EU-EU21-PkBudg500:
    path_gdx_refpolicycost: NA -> SSP2EU-EU21-NPi
~ SSP2EU-EU21-PkBudg650:
    path_gdx_refpolicycost: NA -> SSP2EU-EU21-NPi
~ SSP2EU-EU21-PkBudg1050:
    path_gdx_refpolicycost: NA -> SSP2EU-EU21-NPi
~ SSP1-NDC:
    path_gdx_refpolicycost: NA -> SSP1-NPi
~ SSP5-NDC:
    path_gdx_refpolicycost: NA -> SSP5-NPi
~ SDP_MC-NDC:
    path_gdx_refpolicycost: NA -> SDP_MC-NPi
~ SDP_EI-NDC:
    path_gdx_refpolicycost: NA -> SDP_EI-NPi
~ SDP_RC-NDC:
    path_gdx_refpolicycost: NA -> SDP_RC-NPi
~ SSP2EU_lowEn-NDC:
    path_gdx_refpolicycost: NA -> SSP2EU_lowEn-NPi
~ SSP2EU_PBS-NDC:
    path_gdx_refpolicycost: NA -> SSP2EU_PBS-NPi
~ SSP2EU_PBS-PkBudg650:
    path_gdx_refpolicycost: NA -> SSP2EU_PBS-NPi

Type of change

• [x] convenience for the macro group

Checklist:

• [x] I explained my changes within the PR, particularly in hard-to-understand areas
• [x] Most automated model tests pass ([ FAIL 1 | WARN 0 | SKIP 7 | PASS 78 ]) -> except for https://github.com/remindmodel/remind/issues/1597