Remove conversation related options in bubble manage menu

* Change "Don't bubble conversation" option text to "Don't bubble"
* Remove "Keep Notes settings" option from manage menu:
  * Remove goto settings option if bubble is app bubble (Bubble key equals `KEY_APP_BUBBLE`)

Test: manual
Test: atest BubblesTest
Bug: 268546471
Change-Id: I4384912cb7795ca5c6c0b798c4eef965ba2949ef