databricks bundle init with default python: show serverless prompt, and default to yes (#3051)

## Changes
when running
```bash
databricks bundle init
```
and choosing default python, the option to use serverless should appear,
and default to yes.

## Why
At the moment, I'm not sure most users know the serverless option is
available. The field is suggesting serverless, so we should make the
default our preference.

## Tests
I ran `./cli bundle init`

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---------

Co-authored-by: Lennart Kats (databricks) <lennart.kats@databricks.com>

Author: sol-db

NEXT_CHANGELOG.md

@@ -13,6 +13,8 @@
 * Remove support for deprecated `experimental/pydabs` config, use `experimental/python` instead. See [Configuration in Python
 ](https://docs.databricks.com/dev-tools/bundles/python). ([#3102](https://github.com/databricks/cli/pull/3102))
 
+* The `default-python` template now prompts if you want to use serverless compute (default to `yes`) ([#3051](https://github.com/databricks/cli/pull/3051)).
+
 ### API Changes
 * Removed `databricks custom-llms` command group.
 * Added `databricks ai-builder` command group.

libs/template/templates/default-python/databricks_template_schema.json

@@ -32,10 +32,9 @@
         },
         "serverless": {
             "type": "string",
-            "default": "no",
-            "enum": ["no", "yes"],
+            "default": "yes",
+            "enum": ["yes", "no"],
             "description": "Use serverless compute",
-            "skip_prompt_if": {},
             "order": 5
         }
     },