PYTHON-5774 Add no-orchestration tasks to test-win64 variant

Run mock-based daemon tests (including Windows-specific ones) on the
Win64 Evergreen variant.

Author: aclark4life

.evergreen/generated_configs/variants.yml

@@ -615,6 +615,7 @@ buildvariants:
   - name: test-win64
     tasks:
       - name: .test-standard !.pypy
+      - name: .test-no-orchestration !.pypy
     display_name: "* Test Win64"
     run_on:
       - windows-2022-latest-small

.evergreen/scripts/generate_config.py

@@ -97,6 +97,8 @@ def create_standard_nonlinux_variants() -> list[BuildVariant]:
             tasks = [
                 f".test-standard !.pypy .server-{version}" for version in get_versions_from("6.0")
             ]
+        if host_name == "win64":
+            tasks.append(".test-no-orchestration !.pypy")
         host = HOSTS[host_name]
         tags = ["standard-non-linux"]
         expansions = dict()