Avoid killing the whole mutable state in the following two cases:
- When we encounter a mutable object store operation, we can only kill
  the respective object/field pair in the mutable state.
- When we encounter an immutable initialization operation, we do not
  have to modify the state. A DCHECK ensures we do not initialize the
  same field twice.

Drive-by: Avoid zone-allocating data structures for frame-local
variables.

Bug: v8:11510
Change-Id: I1c655f619cf620923256f460b30dc7371de571de
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3452022Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79035}