[Mobile] - Highlight text - Fix issue when moving the caret and autocorrected words

[geriux]

Fixes #38246

• Aztec iOS PR -> Improve Mark formatting wordpress-mobile/AztecEditor-iOS#1352
• WordPress iOS PR -> [TO TEST] - Highlight text - Fix issue when moving the caret and autocorrected words wordpress-mobile/WordPress-iOS#18148

What?

This PR fixes two current issues with the highlight text feature:

• Now moving the caret after highlighting some words won't keep the previously selected color when typing new characters.
• Autocorrected wors will keep the highlighted color when the new entry is replaced.

Why?

While testing the highlight text feature, these issues were discovered. This PR will handle some of the reported problems.

How?

This PR updates the Aztec version that handles these bugs.

Testing Instructions

After moving the caret the default color text is restored

• Open the app
• Add a Paragraph block.
• Type some text.
• Tap on the Highlight text format button and select a color.
• Type some more text and observe that the selected color is applied to the text written.
• Move the caret around and place it at the end of the text.
• Type some more text.
• Expect the newly introduced text to have the default text color

Autocorrected words keep the highlighted style

• Open the app
• Add a Paragraph block
• Type some words that will need to be autocorrected and accept the suggestions (tapping on the space bar for example) this will autocorrect it
• Select one of the autocorrected words and toggle the Bold formatting (this is a quick way to check the color formatting is not lost)
• Expect to see all autocorrected words to keep their highlighted colors.

Screenshots or screencast

After moving the caret the default color text is restored

Before	After

Autocorrected words keep the highlighted style

Before	After

[geriux]

Closing in favor of #57650