test: exclude standalone QA group from All

QA is its own dep-adding test group (test/QA/Project.toml) and is run as
a separate CI matrix entry, so it should not also fire under the "All"
group. CI never runs "All", and a local "All" run should not pull the QA
tooling into the functional test pass.

Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: ChrisRackauckas

test/runtests.jl

@@ -98,7 +98,7 @@ end
         # not leak into the subsequent functional Core tests run in the main env.
         main_test_project = Base.active_project()
 
-        if GROUP == "QA" || GROUP == "All"
+        if GROUP == "QA"
             # QA (Aqua) runs in its own dep-adding environment (test/QA/Project.toml)
             # so the QA tooling is not part of the main test dependency set.
             activate_qa_env()