Add git diff violation checking after build output #12356

Job	Run time
tests / Perf script still works	4m 14s
tests / Type Checking (current version)	45s
tests / Linting	1m 8s
tests / Basic Test	2m 13s
tests / Type Checking (other supported versions) (5.3)	42s
tests / Type Checking (other supported versions) (5.6)	41s
tests / Type Checking (other supported versions) (5.7)	45s
tests / Type Checking (other supported versions) (5.9)	41s
tests / Type Checking (other supported versions) (5.4)	44s
tests / Type Checking (other supported versions) (5.8)	41s
tests / Type Checking (other supported versions) (5.5)	42s
tests / Type Checking (other supported versions) (5.2)	39s
tests / Blueprint Tests	1m 51s
tests / Node.js Tests	52s
tests / Browser Tests (Firefox)	2m 16s
tests / Browserstack Tests (Safari, Edge)	14m 1s
tests / Deprecations as errors	16m 44s
tests / Deprecations as errors, with optional features	2m 26s
tests / Smoke tests (Full Ember Apps) (embroiderWebpack-basics)	1m 8s
tests / Smoke tests (Full Ember Apps) (classicUseModulesFeature-basics)	1s
tests / Smoke tests (Full Ember Apps) (classic-basics)	16m 29s
tests / Production build, with optional features	2m 13s
tests / Smoke tests (Full Ember Apps) (embroiderVite-basics)	1s
tests / Production build	2m 14s
tests / All deprecations enabled	2m 5s
tests / All deprecations enabled, with optional features	2m 9s
tests / Smoke tests (Full Ember Apps) (node-node-tests)	1m 5s
Notify Discord	-1s
Publish alpha from default branch	-1s
Publish channel to s3	-1s
	1h 19m 27s

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