[Merged by Bors] - chore(Data/Finset/Max): use to_dual

[JovanGerb]

This PR uses to_dual on Finset.max and Finset.max'

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[github-actions]

PR summary a789708d12

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

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Declarations diff (regex)

- Multiset.exists_min_image
- _root_.Monotone.map_finset_min'
- coe_min'
- exists_min_image
- exists_next_left
- induction_on_min
- induction_on_min_value
- isLUB_iff_isGreatest
- isLUB_mem
- isLeast_min'
- le_min
- le_min'
- le_min'_iff
- le_min_iff
- lt_min'_iff
- map_ofDual_min
- map_toDual_min
- mem_of_min
- min
- min'
- min'_eq_iff
- min'_eq_inf'
- min'_erase_ne_self
- min'_image
- min'_insert
- min'_le
- min'_lt_of_mem_erase_min'
- min'_mem
- min'_pair
- min'_singleton
- min'_subset
- min'_union
- min_empty
- min_eq_bot
- min_eq_inf_withTop
- min_eq_top
- min_erase_ne_self
- min_insert
- min_le
- min_le_of_eq
- min_mem_image_coe
- min_mem_insert_top_image_coe
- min_mono
- min_of_mem
- min_of_nonempty
- min_pair
- min_singleton
- min_union
- notMem_of_coe_lt_min
- notMem_of_lt_min
- ofDual_min'
- toDual_min'

You can run this locally as follows

## from your `mathlib4` directory:
git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci

## summary with just the declaration names:
../mathlib-ci/scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
../mathlib-ci/scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh in the mathlib-ci repository contains some details about this script.

Declarations diff (Lean)

✅ Lean-aware diff — post-build, computed from the Lean environment (commit a789708).

• +1 new declarations
• −0 removed declarations

+Finset.min_eq_inf_coe

---

No changes to strong technical debt.
No changes to weak technical debt.

Current commit a789708d12
Reference commit df0e53b719

This script lives in the mathlib-ci repository. To run it locally, from your mathlib4 directory:

git clone https://github.com/leanprover-community/mathlib-ci.git ../mathlib-ci
../mathlib-ci/scripts/reporting/technical-debt-metrics.py pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

[jcommelin]

Thanks 🎉

bors merge

[mathlib-bors]

Pull request successfully merged into master.

Build succeeded:

• ci (staging) / Lint style
• ci (staging) / Post-Build Step
• ci (staging) / Test and lint
• ci (staging) / Post-CI job
• ci (staging) / Build