[FEATURE] Support testConnection Without Catalog Name in Gravitino

[dataageek]

Describe the feature

Description:

The testConnection method currently requires a catalog name, as it depends on Metalake, which enforces this. However, there are cases where we need to validate the connection using only provider and properties before creating a catalog. This limitation makes it difficult to test connections early in the workflow.

Motivation

• Enables connection testing before catalog creation.
• Simplifies workflows and enhances flexibility.

Describe the solution

Allow testConnection to work with just provider and properties, making the catalog name optional.

Additional context

No response