TST: 32bit compat for interval get_indexer
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=h1) Report
> Merging [#16006](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/85a9f8c2d5218c92a042bc7fdafe619758bfe31c?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/16006/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #16006      +/-   ##
==========================================
- Coverage   91.02%   91.02%   -0.01%     
==========================================
  Files         145      145              
  Lines       50391    50391              
==========================================
- Hits        45870    45869       -1     
- Misses       4521     4522       +1
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `88.82% <ø> (-0.01%)` | :arrow_down: |
| #single | `40.33% <ø> (ø)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/core/common.py](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=tree#diff-cGFuZGFzL2NvcmUvY29tbW9uLnB5) | `90.68% <0%> (-0.35%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/16006?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
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