Fix link insertion at start of lists.

[SergioEstevao]

Fixes #2319

To test:

• Follow the steps in the ticket above
• Beside fixing the issue the caret selection should be positioned at the end of the links after insertion.

PR submission checklist:

• I have considered adding unit tests where possible.
• I have considered if this change warrants user-facing release notes and have added them to RELEASE-NOTES.txt if necessary.

[peril-wordpress-mobile]

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[Tug]

Just tested the PR. It seems that the cursor does move to the end when adding a new link but it doesn't work when converting existing text. Thus the bug described in #2319 is still reproducible.

[guarani]

Just tested the PR. It seems that the cursor does move to the end when adding a new link but it doesn't work when converting existing text. Thus the bug described in #2319 is still reproducible.

@SergioEstevao told me this ended up being a non-issue.

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Tested scenarios on iOS & Android working as expected

• ✅ Add link to existing text
• ✅ Add link and text to the end of exiting text
• ✅ Multi-line links
• ✅ Deleting and editing links