Searchable BelongsTo field fetches all available resources when cleared by the user, partially defeating the purpose of being "searchable"

[k8n]

• Laravel Version: 11.11.0
• Nova Version: 4.34.1
• PHP Version: 8.3.1
• Database Driver & Version: pgsql
• Operating System and Version: Ubuntu 20
• Browser type and version: Chrome 114+
• Reproduction Repository: https://github.com/k8n/issues-6434-6454

Description:

See clearResourceSelection() of fields/Form/BelongsToField.vue. getAvailableResources() is called irrespective of whether the field isSearchable() (whereas initializeComponent() actually checks that condition first).

Detailed steps to reproduce the issue on a fresh Nova installation:

• Setup a resource with a searchable BelongsTo field to another model
• Create an instance of the model in Nova with the relationship set
• Go to edit said resource
• Clear the association (press the X within the field)
• Watch Nova suck in representation of all relatable resources from the backend