Fix starlette tox envs for isolated testing

- Remove starlette 0.36 envs (not relevant to 1.0 compat verification)
- Run only starlette tests in starlette envs (avoids collection errors
  from Django tests when Django is not installed)
- Add asgiref dep (needed by test, normally a Django transitive dep)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mitchh456

tox.ini

@@ -4,8 +4,7 @@ envlist =
     {py310,py311,py312,py313}-django{40,41,42},
     {py310,py311,py312,py313}-django{50a,51,52},
     py314-django52,
-    {py310,py311,py312,py313}-starlette{036,10},
-    py314-starlette10,
+    {py310,py311,py312,py313}-starlette10,
 [testenv]
 passenv =
     ELASTICSEARCH_URL
@@ -53,9 +52,9 @@ deps =
     rq
     six
     sqlalchemy
-    !starlette036-!starlette10: starlette
-    starlette036: starlette>=0.36,<0.37
+    !starlette10: starlette
     starlette10: starlette>=1.0,<1.1
+    starlette10: asgiref
     webtest
 commands =
     pytest {posargs}
@@ -65,6 +64,6 @@ commands =
 commands =
     pytest {posargs} --asyncio-mode=auto
 
-[testenv:py{310,311,312,313,314}-starlette{036,10}]
+[testenv:py{310,311,312,313}-starlette10]
 commands =
-    pytest {posargs} --asyncio-mode=auto
+    pytest tests/integration/test_starlette.py {posargs} --asyncio-mode=auto