Also, just a quick question for @Gauravvvv, patch #28 is not precisely a re-r...

Also, just a quick question for @Gauravvvv, patch #28 is not precisely a re-roll of #16.
In #16 the change for core/modules/system/js/system.modules.js has

I have not made any chnages manually into core/modules/system/js/system.modules.js file. All these changes are compiled by yarn.

Also both of these lines of code achieve the same result, which is concatenating a space character and the text content of the item variable to the sourcesConcat variable