Organize test jobs (#19058)

* Tests conditional run

* Syntax

* Deps

* Try early exit

* Another way

* Test with no tests to run

* Test all

* Typo

* Try this way

* With tests to run

* Mostly finished

* Typo

* With a modification in one file only

* No change, no tests

* Final cleanup

* Address review comments

setup.py

@@ -236,7 +236,6 @@ class DepsTableUpdateCommand(Command):
 
 
 extras = {}
-extras["blob"] = []
 
 extras["ja"] = deps_list("fugashi", "ipadic", "unidic_lite", "unidic")
 extras["sklearn"] = deps_list("scikit-learn")