Improve performance of InternalParquetRecordReader (1%)

### Describe the enhancement requested

Profiling the load of a Parquet file with Java Mission Control, I've noticed that `InternalParquetRecordReader` [LongStream](https://github.com/apache/parquet-java/blob/1f1e07bbf750fba228851c2d63470c3da5726831/parquet-hadoop/src/main/java/org/apache/parquet/hadoop/InternalParquetRecordReader.java#L323) consumes relevant amount of time.

This `LongStream` can be replaced with a simpler Long Iterator that iterates from 0 to `pages.getRowCount()`.

To measure the overhead I've created a test project that overwrites `InternalParquetRecordReader` implementation with a Long Iterator: https://github.com/jerolba/parquet-rowindexiterator

The execution time is sensitive to the context of the JVM, but running the benchmark multiple times shows that LongStream is slower than LongIterator, between 1% and 4% depending on the run.

### Component(s)

_No response_

Start in parquet-hadoop/src/main/java/org/apache/parquet/hadoop/InternalParquetRecordReader.java at the LongStream around line 323, then review the linked parquet-rowindexiterator benchmark project. Compare the reader's current iteration with the benchmark's Long Iterator approach; done means the reader avoids the reported LongStream overhead while preserving row-index iteration behavior.

Written by the indexing model from the issue text.