Don't allow cancelling manual pick.

Bug: 6347202
Change-Id: I30b53256e83c534436b0f0ff594fd4aaabf4558c

java/src/com/android/inputmethod/latin/LatinIME.java

@@ -1848,6 +1848,8 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         mExpectingUpdateSelection = true;
         commitChosenWord(suggestion, LastComposedWord.COMMIT_TYPE_MANUAL_PICK,
                 LastComposedWord.NOT_A_SEPARATOR);
+        // Don't allow cancellation of manual pick
+        mLastComposedWord.deactivate();
         // Add the word to the user history dictionary
         addToUserHistoryDictionary(suggestion);
         mSpaceState = SPACE_STATE_PHANTOM;