[BUG] Extension databricks.databricks has provided an invalid tree item.

[C0dingMast3r]

Describe the bug When a complex variable is defined, it breaks the bundle variables visual

To Reproduce Steps to reproduce the behavior:

1. Go to 'your databricks.yml file'
2. try to intsert the below variable:

variables:
  my_cluster:
    description: 'My cluster definition'
    type: complex
    default:
      spark_version: '13.2.x-scala2.11'
      node_type_id: 'Standard_DS3_v2'
      num_workers: 2
      spark_conf:
        spark.speculation: true
        spark.databricks.delta.retentionDurationCheck.enabled: false

3. See that Bundle Variables in the extension will break and you will get a popup saying: Extension databricks.databricks has provided an invalid tree item.

Screenshots

System information:

1. Paste the output ot the Help: About command (CMD-Shift-P).

Version: 1.98.2 (user setup)
Commit: ddc367ed5c8936efe395cffeec279b04ffd7db78
Date: 2025-03-12T13:32:45.399Z
Electron: 34.2.0
ElectronBuildId: 11161602
Chromium: 132.0.6834.196
Node.js: 20.18.2
V8: 13.2.152.36-electron.0
OS: Windows_NT x64 10.0.22631

2. Databricks Extension Version: 2.9.1 Databricks Extension Logs Please attach the databricks extension logs

2025-03-30 15:15:58.542 [info] validate: Reading local bundle configuration for target user_dev...
2025-03-30 15:16:00.327 [info] validate: Finished reading local bundle configuration.
2025-03-30 15:16:00.340 [info] summarize: Refreshing bundle configuration for target user_dev...
2025-03-30 15:16:01.946 [info] summarize: Bundle configuration refreshed.
2025-03-30 15:16:09.616 [info] summarize: Refreshing bundle configuration for target user_dev...
2025-03-30 15:16:11.287 [info] summarize: Bundle configuration refreshed.

Additional context Note: The issue is not in the logs as complex variables do work, its just that when used they break the visual component in BUNDLE Variables