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/i18n/translations/en.json

@@ -1877,6 +1877,7 @@
     },
     "edit": {
       "header": "Edit Campaign",
+      "description": "Edit the details of the campaign.",
       "successToast": "Campaign '{{name}}' was successfully updated."
     },
     "configuration": {
@@ -1888,6 +1889,8 @@
       }
     },
     "create": {
+      "title": "Create Campaign",
+      "description": "Create a promotional campaign.",
       "hint": "Create a promotional campaign.",
       "header": "Create Campaign",
       "successToast": "Campaign '{{name}}' was successfully created."
@@ -2301,9 +2304,12 @@
     },
     "edit": {
       "header": "Edit API Key",
+      "description": "Edit the API key's title.",
       "successToast": "API key {{title}} was successfully updated."
     },
     "salesChannels": {
+      "title": "Add Sales Channels",
+      "description": "Add the sales channels that the API key should be limited to.",
       "successToast_one": "{{count}} sales channel was successfully added to the API key.",
       "successToast_other": "{{count}} sales channels were successfully added to the API key.",
       "alreadyAddedTooltip": "The sales channel has already been added to the API key.",