fix(dashboard,ui): Fixes to Combobox and CategoryCombobox (#9537)

**What**
- Fixes the Combobox to keep the width of the content constant.
- Brings CategoryCombobox inline with the other Combobox component
- Adds keyboard navigation to the CategoryCombobox: You can now navigate options using ArrowUp and ArrowDown, and if an option has children you can use ArrowRight to see the children options.
- Add "outline-none" to the Drawer component to stop it from flashing whenever focus is dropped.
- Removes a dependency that was added to the UI package by mistake

Resolves CC-155

packages/admin/dashboard/src/hooks/use-combobox-data.tsx

@@ -76,13 +76,13 @@ export const useComboboxData = <
    */
   const disabled = !rest.isPending && !options.length && !searchValue
 
-  // // make sure that the default value is included in the option, if its not in options already
-  if (
-    defaultValue &&
-    defaultOptions.length &&
-    !options.find((o) => o.value === defaultValue)
-  ) {
-    options.unshift(defaultOptions[0])
+  // make sure that the default value is included in the options
+  if (defaultValue && defaultOptions.length && !searchValue) {
+    defaultOptions.forEach((option) => {
+      if (!options.find((o) => o.value === option.value)) {
+        options.unshift(option)
+      }
+    })
   }
 
   return {