Simplified Chinese IME Not Working on Japanese Windows 11 ("IME dictionaries are not ready yet")

Question

I am unable to use the Simplified Chinese IME on my Windows 11 Pro machine. When I try to download the "Basic Typing" feature under Settings > Time & Language > Language > Chinese (Simplified) [...]> Language Options, I encounter the error: Error Code: 0x8024002E.

My machine is part of a company-managed environment running the Japanese version of Windows 11 Pro. Unfortunately, the IT administrator has not been able to find a solution.

Some specific questions:

How can I enable the Simplified Chinese IME on a company-managed Japanese Windows 11 Pro environment?

If Group Policy restricts Windows Update access, what steps can I take to work around this? Specifically, is there a way for the IT administrator to exclude the parts of Windows Update required for Features on Demand (FOD) installation from the current restrictions?

According to the documentation Features on Demand Media, a "Windows 11 Languages and Optional Features ISO" might be needed. Where can I obtain this ISO?

If the ISO is required, how can I explain to my IT administrator what to do to resolve this issue? They are not very familiar with Windows 11's feature-on-demand processes.

Any help or guidance would be greatly appreciated!