feat: replace Finsupp.embDomain_apply with more general lemma

[kim-em]

• depends on [Merged by Bors] - feat: grind annotations for choose_spec #31927
• depends on [Merged by Bors] - feat: grind annotation for Embedding.injective #31928

[github-actions]

PR summary 82d756ea35

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

---

Declarations diff

+ embDomain_apply_self

You can run this locally as follows

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

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

---

No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh 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).

[eric-wieser]

Is there a general rule here that grind should aggressively introduce ifs (as opposed to simp, which I think by convention should not)?

[jcommelin]

bors d+

[jcommelin]

Suggested change

	simp [embDomain_apply]

[mathlib-bors]

✌️ kim-em can now approve this pull request. To approve and merge a pull request, simply reply with bors r+. More detailed instructions are available here.