perf: code-split xterm bundle and gate terminal features for cloud

- Gate logs-terminal keybinding (Ctrl+`) registration for cloud builds
- Filter out ToggleBottomPanel command for cloud builds
- Gate terminal tab registration in bottomPanelStore for cloud
- Convert terminal tab components to async imports (defineAsyncComponent)
- Dynamic import of useTerminalTabs module ensures xterm bundle is tree-shaken

The ~400KB xterm bundle (vendor-xterm-*.js) is now only loaded on
non-cloud distributions when terminal tabs are registered.

Fixes COM-14129

Co-authored-by: Amp <amp@ampcode.com>
Amp-Thread-ID: https://ampcode.com/threads/T-019c17af-8992-739f-be03-1e375de1b56b

src/composables/useCoreCommands.ts

@@ -8,6 +8,7 @@ import {
   DEFAULT_DARK_COLOR_PALETTE,
   DEFAULT_LIGHT_COLOR_PALETTE
 } from '@/constants/coreColorPalettes'
+
 import { tryToggleWidgetPromotion } from '@/core/graph/subgraph/proxyWidgetUtils'
 import { t } from '@/i18n'
 import {