Fix indent for orderedlist paragraph

[DavidPerezP124]

Issue:

Indent for ordered list is not working as expected.

Using a listIndent or orderedListIndent less than the prefix's width results in the number always being cutoff from the editor.

Using Sample's default MarkdownEditorContent implementation with richTextState.config.orderedListIndent = 40

Solution:

This adds the startTextWidth to the level multiplier for the restLine, instead of removing it from the firstline which always removed the width of the number in the list.

Before and After Screenshot

Using richTextState.config.orderedListIndent = 0
Before:

After: