feat(dashboard): Submit forms on Cmd + Enter (#9623)

**What**
- Changes all forms to only submit on Cmd/Ctrl + Enter instead of just Enter.
- Cleans up the position of submit/cancel buttons in many FocusModals that still had them in the header.
- Fixes responsiveness of multiple forms
- Removes the SplitView component, and replaces its usages with StackedDrawer/Modal to align the UX across the project.

Resolves CC-103, CC-535

packages/admin/dashboard/src/components/inputs/combobox/combobox.tsx

@@ -32,7 +32,7 @@ import {
 } from "react"
 import { useTranslation } from "react-i18next"
 
-import { genericForwardRef } from "../../common/generic-forward-ref"
+import { genericForwardRef } from "../../utilities/generic-forward-ref"
 
 type ComboboxOption = {
   value: string