Avoid uncecessary iteration in SequenceLearner

[jbweston]

This change is relevant when a SequenceLearner is used with an object that provides the Sequence interface, but lazily evaluates its elements.

Description

Please include a summary of the change and which (if so) issue is fixed.

Fixes #(ISSUE_NUMBER_HERE)

Checklist

• Fixed style issues using pre-commit run --all (first install using pip install pre-commit)
• pytest passed

Type of change

Check relevant option(s).

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• (Code) style fix or documentation update
• This change requires a documentation update

[jbweston]

If we could make a patch release once this is merged that would be cool.

[codecov-commenter]

Codecov Report

Merging #380 (88b0326) into main (e06b34c) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #380      +/-   ##
==========================================
- Coverage   77.76%   77.70%   -0.06%     
==========================================
  Files          37       37              
  Lines        5423     5423              
  Branches      982      981       -1     
==========================================
- Hits         4217     4214       -3     
- Misses       1061     1062       +1     
- Partials      145      147       +2     

Impacted Files	Coverage Δ
adaptive/learner/sequence_learner.py	76.10% <100.00%> (ø)
adaptive/runner.py	68.60% <0.00%> (-0.69%)	⬇️
adaptive/tests/test_cquad.py	91.61% <0.00%> (-0.65%)	⬇️

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[basnijholt]

LGTM 👍

[basnijholt]

@jbweston https://github.com/python-adaptive/adaptive/releases/tag/v0.14.2