Windows: Ctrl + right / left arrows doesn't navigate by word any longer

[afercia]

Noticed while re-resting #6002 (comment)

On Windows, standard keyboard shortcuts to move the caret "by word" in a textarea are Ctrl + right arrow and Ctrl + left arrow. This used to work within the blocks rich text area but seems it's now broken.

• test with any browser on Windows
• go in a standard textarea, for example in WordPress > Settings > Discussion
• enter some text in one of the textareas there
• verify Ctrl + right arrow and Ctrl + left arrow move the caret "by word"

Then go in the Block Editor, create a new post, add same text in a paragraph:

• Ctrl + right arrow and Ctrl + left arrow move the caret by character
• expected: by word

Note: Shift + Ctrl + right arrow and Shift + Ctrl + left arrow still work correctly and select text by word

In any editor, standard operations like navigating / selecting text should always work with the native shortcuts. Not to mention the breakage of standard keyboard navigation is even more serious for assistive technologies users.

This appears to have changed at some time, sorry I'm not able to trace down exactly when.