CNDB-15608 simplify ceiling row id from primary key (#2142)

PartitionAwarePrimaryKeyMap implements overcomplicated `ceiling` method
calling `exactRowIdOrInvertedCeiling`.

This commit Simplifies PartitionAwarePrimaryKeyMap.ceiling to use the corresponding
correct method from the reader directly.
This can be seen as a follow up to
https://github.com/datastax/cassandra/pull/1096/files#diff-c5011580ab9b0d99d9e504570c4cccb152221d3dbe62c8a956e83fce9070b380

Author: k-rus

src/java/org/apache/cassandra/index/sai/disk/v1/PartitionAwarePrimaryKeyMap.java

@@ -170,13 +170,7 @@ public long exactRowIdOrInvertedCeiling(PrimaryKey key)
     @Override
     public long ceiling(PrimaryKey key)
     {
-        var rowId = exactRowIdOrInvertedCeiling(key);
-        if (rowId >= 0)
-            return rowId;
-        if (rowId == Long.MIN_VALUE)
-            return -1;
-        else
-            return -rowId - 1;
+        return rowIdToToken.ceilingRowId(key.token().getLongValue());
     }
 
     @Override