Catches IndexOutOfBoundsException occurring on edge cases

[antonis]

Fixes https://github.com/wordpress-mobile/WordPress-Android/issues/20481

Related PRs:

• https://github.com/WordPress/gutenberg/pull/60107 (https://github.com/WordPress/gutenberg/pull/60115)
• https://github.com/wordpress-mobile/gutenberg-mobile/pull/6765
• https://github.com/wordpress-mobile/WordPress-Android/pull/20518

Description

This PR adds exception handling for an IndexOutOfBoundsException thrown from the SpannableStringBuilder when the requested character position >= length on rare occasions.

Test

I did not find a way to reproduce the issue. Thus I suggest a sanity check like the following:

1. Open the editor
2. Apply some style
3. Place the cursor inside the style span
4. Accept a keyboard suggestion
5. Verify that no crash occurs and that the style is applied after the text change

https://github.com/wordpress-mobile/AztecEditor-Android/assets/304044/0a1b1b4d-1425-4d1e-89db-7e3c9847980b

Make sure strings will be translated:

• [x] If there are new strings that have to be translated, I have added them to the client's strings.xml as a part of the integration PR.