Add linear mode (#6670)

![linear-mode](https://github.com/user-attachments/assets/d1aa078a-00a8-4e71-86d5-ee929b269c90)

See also: #6642

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6670-Add-linear-mode-2aa6d73d365081d08887e4a6db3a8fa0)
by [Unito](https://www.unito.io)

src/workbench/eventHelpers.ts

@@ -1,3 +1,4 @@
+import { useCanvasStore } from '@/renderer/core/canvas/canvasStore'
 /**
  * Utility functions for handling workbench events
  */
@@ -25,6 +26,7 @@ export function shouldIgnoreCopyPaste(target: EventTarget | null): boolean {
         'reset',
         'search',
         'submit'
-      ].includes(target.type))
+      ].includes(target.type)) ||
+    useCanvasStore().linearMode
   )
 }