[automerger skipped] Add a cancel string for ToggleSubscriptionDialog to handle Tamil am: 9ecda98ada -s ours am: 5ee56fb6f8 -s ours am: 35099dc4a5 -s ours am: 84351f8360 -s ours

am skip reason: Merged-In I90149c9e4459747d8cd1c35d00c29f81710eb6f4 with SHA-1 eba8857094 is already in history

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Settings/+/2043030

Change-Id: I4576934ead35473820ae69db66c1455a98d6e386
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>