spread prop inside a keyed #each breaks a regular prop which depends on a reactive assignment

[ddnn55]

Describe the bug
Reproduction, showing expected behavior and unexpected behavior: https://svelte.dev/repl/f68a4c8fe9e546bb9f577922415e6968?version=3.19.1

Using a spread prop inside a keyed #each breaks a regular prop which depends on a reactive assignment. Similar to #3521 , but 3521 does not mention anything about a keyed #each.