[v2-10-test] Only install eval-type-backport for Python < 3.10 (#44294)…

… (#44315)

The `eval-type-backport` is a tool to replace some of the controversial
new type hints added with `from future imoport __annotations__`
to "classic" type hint (| and list - into `Union` and `List`).

This helps to battle some of the issues where Pydantic has troubles
when they are used for classes that Pydantic uses.

The library was initially added in #42196 but it was added for all
Python versions - this change limits it only to Python < 3.10
(cherry picked from commit 2948338)

hatch_build.py

@@ -436,6 +436,12 @@
     "cryptography>=41.0.0",
     "deprecated>=1.2.13",
     "dill>=0.2.2",
+    # Required for python 3.8 and 3.9 to work with new annotations styles. Check package
+    # description on PyPI for more details: https://pypi.org/project/eval-type-backport/
+    # NOTE! THIS MIGHT BE REMOVED BEFORE WE RELEASE 2.10.4 if
+    # Pydantic 2.10.2 will add eval-type-backport as dependency for Python 3.8/3.9
+    # see https://github.com/pydantic/pydantic/issues/10958
+    'eval-type-backport>=0.2.0;python_version<"3.10"',
     "flask-caching>=2.0.0",
     # Flask-Session 0.6 add new arguments into the SqlAlchemySessionInterface constructor as well as
     # all parameters now are mandatory which make AirflowDatabaseSessionInterface incompatible with this version.