Fixes for correction mode - reliably show the corrections when tapping on a word.

Also, continue to show the corrections when user keeps replacing the word repeatedly
with different corrections from the suggestion strip. There were problems with
tapping suggestions quickly or tapping the same suggestion more than once (same length).

Also fixes Bug: 2852891 - Text suggestion appears incorrectly when selecting text that's
not a whole word.

Changed the TextEntryState states to an enum type instead of int. Needed it to show the
states for debugging purposes.