Zip Strict for pandas/util and pandas/_libs #62469

[shivamvishal]

• closes #xxxx (Replace xxxx with the GitHub issue number)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

[Copilot]

Pull Request Overview

This PR updates zip() calls throughout pandas/util and pandas/_libs to explicitly specify the strict parameter, enhancing code clarity and safety by making the intended behavior explicit regarding mismatched iterator lengths.

• Adds strict=False to cases where mismatched lengths are intentionally allowed
• Adds strict=True to cases where iterators are expected to have equal lengths
• Updates both Python (.py) and Cython (.pyx) files across utility and core library modules

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pandas/util/_validators.py	Added strict=False to validation functions where argument length mismatches are handled
pandas/util/_doctools.py	Added strict=True to plotting functions expecting paired data
pandas/_libs/tslibs/timezones.pyx	Added strict=True for timezone transition list processing
pandas/_libs/tslibs/offsets.pyx	Mixed usage: strict=True for paired data, strict=False for frequency parsing
pandas/_libs/tslibs/fields.pyx	Added strict=True for datetime field processing
pandas/_libs/missing.pyx	Added strict=True for tuple equality checking
pandas/_libs/index.pyx	Added strict=True for multi-index level processing

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[mroeschke]

Thanks @shivamvishal