fix tree view interface display template

[azrikahar]

fixes #9511

The interface prop for the template is displayTemplate:

directus/app/src/interfaces/list-o2m-tree-view/list-o2m-tree-view.vue

Lines 69 to 72 in 057af23

	displayTemplate: {
	type: String,
	default: undefined,
	},

but the interface configuration field is saving it as template:

directus/app/src/interfaces/list-o2m-tree-view/index.ts

Lines 18 to 28 in 057af23

	{
	field: 'template',
	name: '$t:display_template',
	meta: {
	interface: 'system-display-template',
	options: {
	collectionName: collection,
	},
	width: 'full',
	},
	},

---

Even though this fixes it, now every existing tree views might end up saving this to the DB (example taken from what I have now):

{"template":"{{label}}{{id}}","displayTemplate":"{{label}}"}

so the old "template" property will be dangling here. Not sure should we note this in the release.

[calbrecht]

Not sure should we note this in the release.

From a user perspective i would be glad to be notified about it, even more happy if there was a migration to fix it, although i must admit i do not have a clue if this is in the scope of migrations :)

[calbrecht]

I confirm this fixes #9511 after editing the Interface Display.