fix: fix reverse table scan when checking if block from file overlap

with skyline deletion result error

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -1367,10 +1367,10 @@ static bool keyOverlapFileBlock(TSDBKEY key, SDataBlk* pBlock, SVersionRange* pV
          (pBlock->minVer <= pVerRange->maxVer);
 }
 
-static bool doCheckforDatablockOverlap(STableBlockScanInfo* pBlockScanInfo, const SDataBlk* pBlock) {
+static bool doCheckforDatablockOverlap(STableBlockScanInfo* pBlockScanInfo, const SDataBlk* pBlock, int32_t startIndex) {
   size_t num = taosArrayGetSize(pBlockScanInfo->delSkyline);
 
-  for (int32_t i = pBlockScanInfo->fileDelIndex; i < num; i += 1) {
+  for (int32_t i = startIndex; i < num; i += 1) {
     TSDBKEY* p = taosArrayGet(pBlockScanInfo->delSkyline, i);
     if (p->ts >= pBlock->minKey.ts && p->ts <= pBlock->maxKey.ts) {
       if (p->version >= pBlock->minVer) {
@@ -1409,7 +1409,7 @@ static bool overlapWithDelSkyline(STableBlockScanInfo* pBlockScanInfo, const SDa
 
   // version is not overlap
   if (ASCENDING_TRAVERSE(order)) {
-    return doCheckforDatablockOverlap(pBlockScanInfo, pBlock);
+    return doCheckforDatablockOverlap(pBlockScanInfo, pBlock, pBlockScanInfo->fileDelIndex);
   } else {
     int32_t index = pBlockScanInfo->fileDelIndex;
     while (1) {
@@ -1421,7 +1421,7 @@ static bool overlapWithDelSkyline(STableBlockScanInfo* pBlockScanInfo, const SDa
       }
     }
 
-    return doCheckforDatablockOverlap(pBlockScanInfo, pBlock);
+    return doCheckforDatablockOverlap(pBlockScanInfo, pBlock, index);
   }
 }