Length Placeholder does not work

[JingleheimerSE]

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Describe the bug
Attempting to use %length% Placeholders does not work. Tested primarily with the Floor Plan template.

NOTE: %height%, %width%, and %length% appear to have been added with 21.8.0 according to #3327 but %length% still does not work in

To Reproduce
Steps to reproduce the behavior:

1. Create a new floor plan
2. Drag a wall onto the plan
3. Right click the wall, and select Edit Data..., then check the Placeholders box and hit Apply
4. Edit the label of the wall and enter "Height: %height%, Width: %width%, Length: %length%, Date:%date%"

Expected behavior
All documented placeholders (https://www.drawio.com/doc/faq/predefined-placeholders) should populate

Screenshots
If applicable, add screenshots to help explain your problem.
Using online 16.6.4 version (which may be expected to not function due to feature being added in 21.8.0)

Using Desktop version 24.0.4 (which should function)

draw.io version (In the Help->About menu of the draw.io editor):

• draw.io version 16.6.4
• draw.io Desktop version 24.0.4

Desktop (please complete the following information):

• OS: Win10
• Browser Chrome
• Browser Version 122.0.6261.112

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

I tested the problem in incognito/private mode with all browser extensions switched off, write "yes" below:

• yes

Additional context
Add any other context about the problem here.

[davidjgraph]

Length is only for edges, not shapes.