[fix](jdbc catalog) fix jdbc driver cache load error (#23656)

log error:
`W20230830 11:19:47.495721 3046231 status.h:363] meet error status: [INTERNAL_ERROR]user function's name should be function_id.checksum[.file_name].file_type, now the all split parts are by delimiter(.): 7119053928154065546.20c8228267b6c9ce620fddb39467d3eb.postgresql-42.5.0.jar`

When the jdbc driver had `.` in its name we failed to split it properly

be/test/runtime/user_function_cache_test.cpp

@@ -16,3 +16,31 @@
 // under the License.
 
 #include "runtime/user_function_cache.h"
+
+#include <gtest/gtest-message.h>
+#include <gtest/gtest-test-part.h>
+
+#include <string>
+
+#include "gtest/gtest.h"
+
+namespace doris {
+
+class UserFunctionCacheTest : public ::testing::Test {
+protected:
+    UserFunctionCache ufc;
+};
+
+TEST_F(UserFunctionCacheTest, SplitStringByChecksumTest) {
+    // Test valid string format
+    std::string valid_str =
+            "7119053928154065546.20c8228267b6c9ce620fddb39467d3eb.postgresql-42.5.0.jar";
+    auto result = ufc._split_string_by_checksum(valid_str);
+    ASSERT_EQ(result.size(), 4);
+    EXPECT_EQ(result[0], "7119053928154065546");
+    EXPECT_EQ(result[1], "20c8228267b6c9ce620fddb39467d3eb");
+    EXPECT_EQ(result[2], "postgresql-42.5.0");
+    EXPECT_EQ(result[3], "jar");
+}
+
+} // namespace doris