[FIX] web: fix field selector props validation

Before this commit, it crashes when giving the number 0 or 1 as path
to the ModelFieldSelector in debug mode.
This commit fixes the ModelFieldSelector's props validation.

closes odoo/odoo#138399

X-original-commit: bcba6e6e8041e325963fca21f70d58f715bf1f2f
Signed-off-by: Mathieu Duckerts-Antoine (dam) <dam@odoo.com>
Signed-off-by: Michaël Mattiello (mcm) <mcm@odoo.com>

addons/web/static/src/core/model_field_selector/model_field_selector_popover.js

@@ -95,7 +95,7 @@ export class ModelFieldSelectorPopover extends Component {
         filter: { type: Function, optional: true },
         followRelations: { type: Boolean, optional: true },
         isDebugMode: { type: Boolean, optional: true },
-        path: String,
+        path: [String, { value: 0 }, { value: 1 }],
         resModel: String,
         showSearchInput: { type: Boolean, optional: true },
         update: Function,