Optional projectID parameter enables dynamic, cross-project resource
access in BigQuery tools.
This allows a single tool configuration to target different projects at
runtime, rather than being fixed to the project in its source
configuration.
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Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>
Co-authored-by: Wenxin Du <117315983+duwenxin99@users.noreply.github.com>