[Framework] Fix grouped-combination copyright and formatting

Use the canonical ALICE O2 copyright wording in the integration test.
Align the empty eligibility structs with clang-format 20.

Author: BongHwi

Framework/Core/include/Framework/GroupedCombinations.h

@@ -25,11 +25,13 @@ enum class GroupedSlicePolicy { IncludeEmpty,
                                 SkipEmpty };
 
 template <typename T>
-struct SupportsEmptyAssociatedGate : std::false_type {};
+struct SupportsEmptyAssociatedGate : std::false_type {
+};
 
 template <aod::is_aod_hash L, aod::is_aod_hash D, aod::is_origin_hash O, typename... C>
 struct SupportsEmptyAssociatedGate<soa::Table<L, D, O, C...>>
-  : std::bool_constant<O::hash != "JOIN"_h && O::hash != "CONC"_h> {};
+  : std::bool_constant<O::hash != "JOIN"_h && O::hash != "CONC"_h> {
+};
 
 // Create an instance of a tuple interleaved from given tuples
 template <typename... T1s, typename... T2s, std::size_t... Is>

Framework/Core/test/test_GroupedCombinations.cxx

@@ -7,7 +7,7 @@
 //
 // In applying this license CERN does not waive the privileges and immunities
 // granted to it by virtue of its status as an Intergovernmental Organization
-// and does not submit itself to any jurisdiction.
+// or submit itself to any jurisdiction.
 
 #include "Framework/ASoA.h"
 #include "Framework/AnalysisDataModel.h"