arrow

GH-14923: [C++][Parquet] Fix DELTA_BINARY_PACKED problem on reading the last block with malford bit-width (#15241)

Problem is mentioned here: https://github.com/apache/arrow/issues/14923

This patch fixes that issue. And the code is a bit complex.
- Rename variables, since original name is confusing for me. 
  - `block_initialized_` -> `first_block_initialized_`, because it's a mask that indicates that if the first block in page is initialized.
  - `total_value_count_` -> `total_values_remaining_`. Because it's not `total values within a page`, it means `remaing values to be decoded within a page`
  - `values_count_current_mini_block_` -> `values_remaining_current_mini_block_`, ditto
- Add variables
  - `total_value_count_`: the total value numbers within a page.
- Change Syntax
  -  Change `InitBlock()` to `InitBlock()` and `InitMiniBlock`
- Implemention, most logic is in `InitBlock()` and `InitMiniBlock`
- Testing. Thanks @ rok. I use a page within 65 values with bitwidth `32 32 165 165`.

And personally, I use the code here for testing:

```c++
   for (uint32_t i = num_miniblocks; i < mini_blocks_per_block_; i++) {
-    bit_width_data[i] = 0;
+    //    bit_width_data[i] = 0;
+    bit_width_data[i] = static_cast<uint8_t>(random());
   }
```

The code works well in both debug and release mode.

* Closes: #14923

Lead-authored-by: mwish <maplewish117@gmail.com>
Co-authored-by: Antoine Pitrou <antoine@python.org>
Signed-off-by: Antoine Pitrou <antoine@python.org>