Add delta push after every delta run in tox environments

Envs that use {[testenv]commands} or {[min]commands} substitution with
extra pytest args (--reactor=default, -p no:twisted --reactor=none) were
expanded explicitly to prevent extra args being appended to delta push.

Affected environments:
- [testenv]              → delta run + delta push
- [min]                  → delta run + delta push
- [testenv:default-reactor]     → expanded, delta push added
- [testenv:min-default-reactor] → expanded, delta push added
- [testenv:no-reactor]          → expanded, delta push added
- [testenv:no-reactor-extra-deps] → expanded, delta push added
- [testenv:min-no-reactor]      → expanded, delta push added

tox.ini

@@ -67,6 +67,7 @@ passenv =
 download = true
 commands =
     delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report= --cov-report=term-missing --cov-report=xml --junitxml=testenv.junit.xml -o junit_family=legacy --durations=10 tests --doctest-modules}
+    delta push
 
 [testenv:mypy]
 basepython = python3.10
@@ -164,6 +165,7 @@ setenv =
     _SCRAPY_MIN=true
 commands =
     delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report=xml --cov-report= --junitxml=min.junit.xml -o junit_family=legacy --durations=10 scrapy tests}
+    delta push
 
 [testenv:min]
 basepython = {[min]basepython}
@@ -213,12 +215,15 @@ commands = {[min]commands}
 
 [testenv:default-reactor]
 commands =
-    {[testenv]commands} --reactor=default
+    delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report= --cov-report=term-missing --cov-report=xml --junitxml=testenv.junit.xml -o junit_family=legacy --durations=10 tests --doctest-modules} --reactor=default
+    delta push
 
 [testenv:min-default-reactor]
 basepython = {[min]basepython}
 deps = {[testenv:min]deps}
-commands = {[min]commands} --reactor=default
+commands =
+    delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report=xml --cov-report= --junitxml=min.junit.xml -o junit_family=legacy --durations=10 scrapy tests} --reactor=default
+    delta push
 setenv =
     {[min]setenv}
 
@@ -227,21 +232,25 @@ deps =
     {[testenv]deps}
     pytest-asyncio
 commands =
-    {[testenv]commands} -p no:twisted --reactor=none
+    delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report= --cov-report=term-missing --cov-report=xml --junitxml=testenv.junit.xml -o junit_family=legacy --durations=10 tests --doctest-modules} -p no:twisted --reactor=none
+    delta push
 
 [testenv:no-reactor-extra-deps]
 deps =
     {[testenv:extra-deps]deps}
     pytest-asyncio
 commands =
-    {[testenv]commands} -p no:twisted --reactor=none
+    delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report= --cov-report=term-missing --cov-report=xml --junitxml=testenv.junit.xml -o junit_family=legacy --durations=10 tests --doctest-modules} -p no:twisted --reactor=none
+    delta push
 
 [testenv:min-no-reactor]
 basepython = {[min]basepython}
 deps =
     {[testenv:min]deps}
     pytest-asyncio
-commands = {[min]commands} -p no:twisted --reactor=none
+commands =
+    delta run -- {posargs:--cov-config=pyproject.toml --cov=scrapy --cov-report=xml --cov-report= --junitxml=min.junit.xml -o junit_family=legacy --durations=10 scrapy tests} -p no:twisted --reactor=none
+    delta push
 setenv =
     {[min]setenv}