Inline icon backspace

[PatelUtkarsh]

Bug Description

When clearing icon with backspace: It adds additional whitespace in editor.

We are using formatting tool api, when hitting backspace it removes icon char one at a time causing extra whitespace.

Example:

https://user-images.githubusercontent.com/5015489/131833552-4ed9e55e-cc59-46ef-93e6-9fa6692a8c18.mp4

Expected Behaviour

Steps to reproduce

1. Insert inline icon via formatting tool.
2. Try to remove icon via backspace.
3. See additional whitespace.

Screenshots

Additional context

• WordPress version:
• Plugin version:
• Gutenberg plugin version (if applicable):
• PHP version:
• OS:
• Browser: [e.g. chrome, safari]
• Device: [e.g. iPhone6]

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Demo

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