Backport PR #27088 on branch v3.8.x (Update `find_nearest_contour` and revert contour deprecations)#27212

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QuLogic merged 1 commit intomatplotlib:v3.8.xfrom

meeseeksmachine:auto-backport-of-pr-27088-on-v3.8.x

Oct 27, 2023

Commits on Oct 26, 2023

Backport PR #27088: Update `find_nearest_contour` and revert contour deprecations

ksunden
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meeseeksmachine
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