Fix the correlation matrix computation in Stouffers and Reports

[JulioAPeraza]

Closes None.

Changes proposed in this pull request:

• Fix the correlation matrix computation in Stouffers and Reports

Summary by Sourcery

Fix the correlation matrix computation in the Stouffers and Reports modules by streamlining the calculation process and eliminating redundant code.

Bug Fixes:

• Correct the computation of the correlation matrix in the Stouffers and Reports modules by simplifying the logic and removing unnecessary loops.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request fixes the correlation matrix computation in the Stouffers method and Reports. The main changes involve simplifying the correlation matrix calculation by using numpy's corrcoef function directly on the input data, rather than iterating through data bags. This change affects both the nimare/reports/base.py and nimare/meta/ibma.py files.

File-Level Changes

Files	Changes
nimare/reports/base.py nimare/meta/ibma.py	Simplified correlation matrix computation by using np.corrcoef directly on input data
nimare/reports/base.py nimare/meta/ibma.py	Removed unnecessary iteration over data bags for correlation calculation
nimare/reports/base.py nimare/meta/ibma.py	Eliminated the need for pre-allocating a zero matrix for correlation

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[sourcery-ai]

Hey @JulioAPeraza - I've reviewed your changes - here's some feedback:

Overall Comments:

• Consider adding a comment about the expected shape of the input data (self.inputs_['z_maps'] and self.results.estimator.inputs_[key_maps]) to improve clarity and maintainability.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.23%. Comparing base (c1cd2d7) to head (9f24cb6).
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #901      +/-   ##
==========================================
- Coverage   88.24%   88.23%   -0.02%     
==========================================
  Files          48       48              
  Lines        6389     6382       -7     
==========================================
- Hits         5638     5631       -7     
  Misses        751      751              

☔ View full report in Codecov by Sentry.
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[jdkent]

LGTM, thanks for removing the flaky test