[Bug-fix] Enable test_plot_conformal_prediction with auto-regression on plot_latest_forecast

[judussoari]

🔬 Background

Fixes #1093

plot_latest_forecast() throws an Error because with conformal prediction, a new column name yhat1 +qhat is inserted in the forecast dataframe, which we have not dealt with before.

🔮 Key changes

Ignore those new column names for now

📋 Review Checklist

• I have performed a self-review of my own code.
• I have commented my code, added docstrings and data types to function definitions.
• I have added pytests to check whether my feature / fix works.

[codecov-commenter]

Codecov Report

Merging #1096 (d3e8211) into main (b91c3fe) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #1096   +/-   ##
=======================================
  Coverage   90.13%   90.13%           
=======================================
  Files          21       21           
  Lines        4796     4796           
=======================================
  Hits         4323     4323           
  Misses        473      473           

Impacted Files	Coverage Δ
neuralprophet/utils.py	81.26% <100.00%> (ø)

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[Kevin-Chen0]

Can you also uncomment the auto-regression part for the test_plot_conformal_prediction to ensure that this fix work? Link.

[Kevin-Chen0]

LGTM