Support template variables in command menu item labels (#18707)

- Adds template variable interpolation (`${...}`) to command menu item
labels and short labels, enabling dynamic text like `Create new
${capitalize(objectMetadataItem.labelSingular)}` instead of static
`Create new record`.
- Supports `capitalize` and `lowercase` transform functions within
template expressions.

packages/twenty-front/src/modules/command-menu-item/utils/getCommandMenuItemLabel.ts

@@ -1,8 +1,14 @@
 import { i18n, type MessageDescriptor } from '@lingui/core';
 import { isString } from '@sniptt/guards';
+import { type Nullable } from 'twenty-shared/types';
+import { isDefined } from 'twenty-shared/utils';
 
 export const getCommandMenuItemLabel = (
-  label: string | MessageDescriptor,
+  label: Nullable<string | MessageDescriptor>,
 ): string => {
+  if (!isDefined(label)) {
+    return '';
+  }
+
   return isString(label) ? label : i18n._(label);
 };