growth: Fix dangling pointer in notification

Here is what happened:
1. Pass the `params` as a raw pointer to the notification. The raw
   pointer is a dictionary pointer in memory.
2. Lock the device.
3. Unlock the device, we replace the dictionary. The pointer became
   dangling.
4. Users click the notification, uses the dangling pointer.

We will fix this by passing a dictionary value to the callbacks.

Bug: 389453140
Test: added new tests and manually tested
Change-Id: If1ff0b2672e121a9dc6e71ea530abb194f00359f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6181795
Reviewed-by: Li Lin <llin@chromium.org>
Commit-Queue: Tao Wu <wutao@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1409431}