Load theme-gc-intranet/js/theme.min.js when gc intranet library is active

Problem/Motivation

Spun from and requires the fix from #3573011: fieldflow and jquery4 fixes for theme-gc-intranet theme.js

Major issue here, vanilla WxT 6.2.x or earlier installation.
Select the wxt library called gc intranet.
Visit the home page.
In the developer console network tab and click on the "js" filter, you won't find /libraries/theme-gc-intranet/js/theme.min.js. It is not loaded in any subsequent page even though we selected the gc intranet library and activated it.

Smoking gun, try using fieldflow, you will notice that it will not function as described. Fieldflow isn't loaded because /libraries/theme-gc-intranet/theme.min.js which has the fieldflow code is not loaded.

Steps to reproduce

Install a fresh wxt 6.2.x or 5.6.x or earlier. Go to the admin / configuration / wxt -> wxt library configuration form, select the "GC Intranet" theme, rebuild cache and visit the home page.
Use the developer console , go to the network tab, filter on js files, notice that /libraries/theme-gc-intranet/theme.min.js is not loaded, you will not see a theme.min.js file in the loaded js files.

Proposed resolution

Step 1) Merge the PR in #3573011: fieldflow and jquery4 fixes for theme-gc-intranet theme.js
Step 2) I have provided an additional PR for wxt_library ensure the jQuery4 compatible libraries/theme-gc-intranet/js/theme.min.js gets loaded.

Remaining tasks

See proposed resolution.

User interface changes

MR

API changes

Once fixed, a js library will be loaded in the scenario described.

Data model changes

N/A