conda install of 1.5.1 not detected by pip

**Describe the bug**

There is a bug in the packaging of v1.5.1. Pip fails to detect it when installed with conda; it seems to be missing the dist-info directory.



**To Reproduce**

In a fresh conda environment, install the latest cxvpy:

`conda install cvxpy -c conda-forge `



**Expected behavior**

I expect to see cvxpy listed as installed when calling `pip list` or `pip freeze`. 



**Output**

cvxpy shows up as `UNKNOWN` when calling `pip list` or `pip freeze`:

```bash

(test-pip) smiskov@PC99612 cvxpy % pip list

Package         Version

--------------- -----------

build           1.2.1

clarabel        0.7.1

ecos            2.0.13

numpy           1.26.4

osqp            0.6.3

packaging       24.0

pip             24.0

pyproject_hooks 1.1.0

qdldl           0.1.7.post2

scipy           1.13.0

scs             3.2.4.post1

setuptools      69.5.1

UNKNOWN         1.5.1

wheel           0.43.0

```



**Version**

 - OS: macOS 14.4.1 and Ubuntu 22.04.4

 - CVXPY Version: 1.5.1



**Additional context**

This was working as expected in v1.4.3. We saw this bug when building our conda package that depends on cvxpy. The build fails to pass the pip check test in our conda recipe (see workflow failure [here](https://github.com/cvxgrp/spcqe/actions/runs/9100537427/job/25015611547#step:6:311) and PR [here](https://github.com/cvxgrp/spcqe/pull/7)).

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