Pass template name to README for templates that inherit from 'default'

[lennartkats-db]

Changes

The default, default-python, pydabs, and lakeflow-pipelines templates now correctly display their template name in the generated README instead of always saying 'default template'.

Why

Showing the actual template name to customers seems helpful, even if it comes at the cost of a bit of extra code in the template.

Tests

Standard template acceptance tests

[eng-dev-ecosystem-bot]

Run: 19161628093

	Env	🔄​flaky	💚​RECOVERED	🙈​SKIP	✅​pass	🙈​skip
💚​	aws linux		1	1	356	595
💚​	aws windows		1	1	357	594
💚​	aws-ucws linux		1	1	479	490
💚​	aws-ucws windows		1	1	480	489
💚​	azure linux		1	1	356	594
💚​	azure windows		1	1	357	593
💚​	azure-ucws linux		1	1	475	489
💚​	azure-ucws windows		1	1	476	488
🔄​	gcp linux	13	1	1	342	596
🔄​	gcp windows	9	1	1	347	595

23 failing tests:

Test Name	aws linux	aws windows	aws-ucws linux	aws-ucws windows	azure linux	azure windows	azure-ucws linux	azure-ucws windows	gcp linux	gcp windows
TestAccept	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R	💚​R
TestAccept/bundle/deployment/bind/dashboard	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/deployment/bind/dashboard/recreation	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	🔄​f
TestAccept/bundle/deployment/bind/experiment	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/deployment/bind/job/job-abort-bind	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/deployment/bind/job/job-spark-python-task	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/deployment/bind/model-serving-endpoint	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/local_state_staleness	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/local_state_staleness/DATABRICKS_BUNDLE_ENGINE=direct	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/resources/clusters/deploy/data_security_mode	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/resources/clusters/deploy/data_security_mode/DATABRICKS_BUNDLE_ENGINE=direct	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/resources/dashboards/change-name	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/resources/dashboards/change-name/DATABRICKS_BUNDLE_ENGINE=terraform	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/resources/jobs/fail-on-active-runs	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/resources/jobs/fail-on-active-runs/DATABRICKS_BUNDLE_ENGINE=direct	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestAccept/bundle/run/app-with-job	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S	🙈​S
TestAccept/bundle/templates/default-python/integration_classic/DATABRICKS_BUNDLE_ENGINE=direct/UV_PYTHON=3.10	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/templates/default-python/integration_classic/DATABRICKS_BUNDLE_ENGINE=direct/UV_PYTHON=3.11	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/templates/default-python/integration_classic/DATABRICKS_BUNDLE_ENGINE=direct/UV_PYTHON=3.12	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestAccept/bundle/templates/default-python/integration_classic/DATABRICKS_BUNDLE_ENGINE=direct/UV_PYTHON=3.13	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f
TestSparkJarTaskDeployAndRunOnWorkspace	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestSparkJarTaskDeployAndRunOnWorkspace/Databricks_Runtime_15.4_LTS	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f	✅​p
TestSyncIncrementalFileSync	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	✅​p	🔄​f