Swiftkey: Headline Style

### Details:
Enter to autocorrect a typo leaves the corrected word, or part of it, in a smaller font.

Thank you @codebykat 😄 !!


Start by reproducing the autocorrection flow on iOS: enter a typo and press Enter, then compare the corrected word's font with the surrounding text. Trace the text-editing and autocorrection entry point; done means the corrected word no longer appears partly in a smaller font.

Written by the indexing model from the issue text.