Notifications: Fix bad layout for long texts

Fixes a bug where the max lines restriction was not properly
passed to ImageFloatingTextView's layout, causing the TextView
to improperly apply bottom padding.

Change-Id: Ibe07515866a4599047712a0482332ed4430c9056
Test: runtest -x core/tests/coretests/src/com/android/internal/widget/ImageFloatingTextViewTest.java
Fixes: 32658499
Bug: 32658499