log error if 'name' is not a key in schema map

[modular-magician]

Fixes hashicorp/terraform-provider-google#7193

log error if 'name' is not a key in schema map

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Release Note Template for Downstream PRs (will be copied)

bigquery: fixed a bug when a big query table schema didn't have `name` in the schema it'd panic, now logs an error.

Derived from GoogleCloudPlatform/magic-modules#3952