COMMUNTIY build grouping adjustments

Unconditionally execute assignment of EXIT_CODE. Otherwise, the variable bleeds
into the next iteration. Also add newline before ::endgroup::. ASAN does not add
a trailing newline.

Author: iluuu1994

.github/workflows/nightly.yml

@@ -570,8 +570,9 @@ jobs:
             cd "amphp-$repository"
             git rev-parse HEAD
             php /usr/bin/composer install --no-progress --ignore-platform-req=php+
-            vendor/bin/phpunit || EXIT_CODE=$?
-            echo "::endgroup::"
+            vendor/bin/phpunit
+            EXIT_CODE=$?
+            echo -e "\n::endgroup::"
             if [ ${EXIT_CODE:-0} -gt 128 ]; then
               X=1;
               echo "Failed"
@@ -603,8 +604,9 @@ jobs:
             cd "reactphp-$repository"
             git rev-parse HEAD
             php /usr/bin/composer install --no-progress --ignore-platform-req=php+
-            vendor/bin/phpunit || EXIT_CODE=$?
-            echo "::endgroup::"
+            vendor/bin/phpunit
+            EXIT_CODE=$?
+            echo -e "\n::endgroup::"
             if [ $[EXIT_CODE:-0} -gt 128 ]; then
               X=1;
               echo "Failed"
@@ -639,8 +641,9 @@ jobs:
           X=0
           for component in $(find src/Symfony -mindepth 2 -type f -name phpunit.xml.dist -printf '%h\n'); do
             echo "::group::$component"
-            php ./phpunit $component --exclude-group tty,benchmark,intl-data,transient --exclude-group skip || EXIT_CODE=$?
-            echo "::endgroup::"
+            php ./phpunit $component --exclude-group tty,benchmark,intl-data,transient --exclude-group skip
+            EXIT_CODE=$?
+            echo -e "\n::endgroup::"
             if [ ${EXIT_CODE:-0} -gt 128 ]; then
               X=1;
               echo "Failed"