Unindent in a numbered list that is under bulleted list gives NaN

[ghprince]

Steps to reproduce

Create a numbered list under a bulleted list

- List item
  1. List item
  2. x

when cursor is at x, press SHIFT+TAB

Expected result

- List item
  1. List item
- x

Actual result

- List item
  1. List item
NaN. x

Environment

• Operating system: macOS

• Obsidian version: 0.7.3

• Using custom CSS: no

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Additional information

[Licat]

Will be fixed in v0.7.6.