hist accepts dictionary views as label

[fxjung]

PR summary

Closes #27954.

PR checklist

• "closes #0000" is in the body of the PR description to link the related issue
• new and changed code is tested
• Plotting related features are demonstrated in an example
• New Features and API Changes are noted with a directive and release note
• Documentation complies with general and docstring guidelines

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[tacaswell]

As this appears to already be implemented on the main branch, it opens the question of if we fixed this intentionally or by accident. If we fixed it intentionally, we should verify that there is a test if we fixed it on accident we should definitely add a test!