Change default DB when generating chip configs

atm by default PDB is used to generate chip configs:

https://gitlab.cern.ch/atlas-itk/pixel/module/module-qc-database-tools/-/blob/main/src/module_qc_database_tools/cli/generate_yarr_config.py?ref_type=heads#L84-86

we agreed to use by default localdb instead unless:

• INITIAL config generation (from WP data)
• first config for that module stage

so that it is consistent with the BoM and Vdepl information retrieval current being worked out by @kojin

tagging @epianori , @gstark