ci: set fail-on-error=false on test reporters

The dorny/test-reporter steps were failing the job a second time when
tests failed. The pytest step is the authoritative failure signal;
the reporter is for display only.

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

Author: camille-004

.github/workflows/ci.yml

@@ -188,6 +188,7 @@ jobs:
           name: Test Results (Python ${{ matrix.python-version }})
           path: test-results.xml
           reporter: java-junit
+          fail-on-error: false
 
   benchmark:
     name: Benchmark
@@ -239,3 +240,4 @@ jobs:
           name: Benchmark Results
           path: benchmark-results.xml
           reporter: java-junit
+          fail-on-error: false