Fix OOB crash in ContentCapture for translated views

When a view is partially visible on the screen, ContentCapture reports
only the visible portion (+ a few additional lines). The offsets
calculated for this can be out of bounds if the view's displayed text
is longer from the original text.

Fix: 196414491
Test: manual - translate app to lang with more characters and trigger
 a relayout (by scrolling for an app with ListView)
Test: atest CtsContentCaptureServiceTestCases
Change-Id: Iae98133c48cc67a0b00f1b0ab8b93e5adb293423
(cherry picked from commit 273a0eab)