fix an issue for real inputs of irfft

[vtavana]

resolves #176

[Copilot]

Pull Request Overview

This PR fixes an issue related to the handling of real inputs for the irfft function and improves consistency across tests and workflows. Key changes include:

• Updating test conditions for various scipy versions and adding new tests for irfft data type consistency.
• Modifying implementations in the numpy FFT interface functions to correct conjugation handling.
• Adjusting GitHub workflow commands to update package installation steps.

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
mkl_fft/tests/third_party/scipy/test_basic.py	Simplified skip calls and updated version range comments
mkl_fft/tests/test_fft1d.py	Added new test (test_irfft_dtype) to validate irfft output dtypes
mkl_fft/interfaces/_numpy_fft.py	Adjusted conjugation in hfft and renamed output variable in ihfft
CHANGELOG.md	Updated changelog entries for fixed input/output dtype inconsistency
.github/workflows/conda-package.yml	Modified conda commands for environment creation and package install
.github/workflows/conda-package-cf.yml	Similar modifications to conda install commands in continuous flow

Files not reviewed (1)

• mkl_fft/_pydfti.pyx: Language not supported