[Enhancement] Avoid redundant latestSnapshot() call in PaimonMetadata#getTableVersionRange (backport #72892) (#73123)

Co-authored-by: haoyuhua <haoyuhua007@gmail.com>

Author: mergify[bot]

fe/fe-core/src/main/java/com/starrocks/connector/paimon/PaimonMetadata.java

@@ -301,8 +301,9 @@ public TvrVersionRange getTableVersionRange(String dbName, Table table,
         if (start.isEmpty() && end.isEmpty()) {
             long snapshotId = -1L;
             try {
-                if (paimonTable.getNativeTable().latestSnapshot().isPresent()) {
-                    snapshotId = paimonTable.getNativeTable().latestSnapshot().get().id();
+                Optional<Snapshot> latestSnapshot = paimonTable.getNativeTable().latestSnapshot();
+                if (latestSnapshot.isPresent()) {
+                    snapshotId = latestSnapshot.get().id();
                 }
             } catch (Exception e) {
                 // System table does not have snapshotId, ignore it.