Fix LineBackgroundSpan_StandardTest

Fix a mistake that when LineBackgroundSpan.drawBackground calls canvas.drawRect
the top and right parameter were switched.
Add the assertion to check LineBackgroundSpan.getSpanTypeId() remains
the same after recovering from parcel.

Bug: 120870485
Test: atest LineBackgroundSpan_StandardTest

Change-Id: I00b177ad69ce506987053b0226ebe4d6a9ebdb72
1 file changed