Remove show_next_bubble param from HideBubble

Since the calls to OnBubbleClosed overrides this value, the
`show_next_bubble` is useless.

Bug: 432429605
Change-Id: Ia6dab830de89f3cc36ce3f8eac922edc8e9fc7de
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6993030
Commit-Queue: Vidhan Jain <vidhanj@google.com>
Reviewed-by: Jan Keitel <jkeitel@google.com>
Cr-Commit-Position: refs/heads/main@{#1522226}