Add [term:source] for source translation

I have successfully applied patch #32 drupal version 9.5.x. After applying the patch i can see [term:source] token for Taxonomy terms. Adding Screenshots for the reference

I confirm I have also successfully applied patch #32 Drupal version 9.5.x. After applying the patch i can see [term:source:name] token for Taxonomy terms when generating URL aliases.

Re #27: generic entity tokens are tricky, token types have no inheritance, so it needs to altered dynamically, we need to figure out if it's our token or not and then also have generic test coverage.

I'm fine with the test coverage here, committed.

Automatically closed - issue fixed for 2 weeks with no activity.