Playground context menu missing "create" item in develop

[cpcallen]

Describe the bug

I was attempting the reproduce steps for issue #5972 in develop, but was unable to to find the "create 'do something'" item in the procedure_defreturn block's context menu. It is present in master.

To Reproduce

Steps to reproduce the behavior:

1. Check out develop branch.
2. npm start
3. Open the "Functions" section of the toolbox.
4. Drag a procedure_defreturn block (the one with a "return" input) to the workspace.
5. Right-click (or appropriate gesture) to open the context menu for this newly created block.

Expected behaviour

The last item in the menu will be "create 'do something'"

Expected behaviour

The menu ends with "Help".

Screenshots

See #5972, step 2 for expected.

Actual:

Desktop (please complete the following information):

• OS: macOS 12.2.1
• Browser: Chrome 99.0.4844.51
• Version: develop, at 2a0e547

Additional context

I wondered if this have been caused by my changes to playground loading in PR #5931, but multi_playground.html has the same problem despite not being converted yet.

[cpcallen]

After a quick manual bisect, I see that the problem began when PR #5959 #5952 was merged. @BeksOmega: any idea what might have caused this?

[alschmiedt]

Fixed in #5976