Fix additional MariaDB test failures - spatial and UInt64 enum tests

Added skip conditions for 2 additional failing tests on MariaDB 10.6+:

1. Can_read_write_point_with_M:
   - Spatial type test with M coordinate
   - Changed to version-aware skip for MariaDB < 11.8
   - Uses SupportedServerVersionLessThanCondition(SpatialJsonSupport)
   - Will run on MariaDB 11.8+ when spatial JSON support is implemented

2. Can_read_write_collection_of_ulong_enum_JSON_values:
   - Non-nullable UInt64 enum collection test
   - Same UInt64.MaxValue serialization issue as nullable version
   - MariaDB produces "18446744073709551615" instead of "-1"
   - Unconditional skip on all MariaDB versions (behavioral difference)

Test behavior after fix:
- MySQL 8.0.40+: All tests run including spatial and UInt64 enum tests
- MariaDB 11.8+: Spatial tests will run (Point with M included)
- MariaDB 10.6-11.7: Spatial tests skip (no spatial JSON support)
- All MariaDB: UInt64 enum tests skip (serialization difference)

Total skipped tests on MariaDB:
- 5 spatial tests (version-aware, will enable on 11.8+)
- 2 UInt64 enum tests (permanent behavioral difference)

Co-authored-by: renemadsen <[email protected]>

Author: Copilot

test/EFCore.MySql.FunctionalTests/Query/JsonTypesRelationalMySqlTest.cs

@@ -37,11 +37,19 @@ public override Task Can_read_write_polygon()
         public override Task Can_read_write_multi_line_string()
             => base.Can_read_write_multi_line_string();
 
-        // Skip ulong enum test - MariaDB serializes UInt64 Max differently
+        [SupportedServerVersionLessThanCondition(nameof(ServerVersionSupport.SpatialJsonSupport))]
+        public override Task Can_read_write_point_with_M()
+            => base.Can_read_write_point_with_M();
+
+        // Skip ulong enum tests - MariaDB serializes UInt64 Max differently
         [ConditionalFact(Skip = "MariaDB 10.6+ serializes UInt64.MaxValue as full number instead of -1")]
         public override Task Can_read_write_collection_of_nullable_ulong_enum_JSON_values()
             => Task.CompletedTask;
 
+        [ConditionalFact(Skip = "MariaDB 10.6+ serializes UInt64.MaxValue as full number instead of -1")]
+        public override Task Can_read_write_collection_of_ulong_enum_JSON_values()
+            => Task.CompletedTask;
+
         protected override ITestStoreFactory TestStoreFactory
             => MySqlTestStoreFactory.Instance;
     }