[BUGFIX] `@model` becomes `undefined` or changes to the wrong route's model during Glimmer component willDestroy #12399

Job	Run time
tests / Type Checking (current version)	44s
tests / Linting	1m 15s
tests / Perf script still works	3m 47s
tests / Basic Test	2m 7s
tests / Type Checking (other supported versions) (5.2)	40s
tests / Type Checking (other supported versions) (5.3)	44s
tests / Type Checking (other supported versions) (5.8)	43s
tests / Type Checking (other supported versions) (5.7)	40s
tests / Type Checking (other supported versions) (5.5)	43s
tests / Type Checking (other supported versions) (5.6)	44s
tests / Type Checking (other supported versions) (5.4)	41s
tests / Type Checking (other supported versions) (5.9)	42s
tests / Blueprint Tests	1m 56s
tests / Browser Tests (Firefox)	2m 8s
tests / Node.js Tests	1m 2s
tests / Browserstack Tests (Safari, Edge)	7m 49s
tests / Smoke tests (Full Ember Apps) (embroiderVite-basics)	1m 28s
tests / Smoke tests (Full Ember Apps) (classicUseModulesFeature-basics)	1m 53s
tests / Production build	2m 15s
tests / Smoke tests (Full Ember Apps) (classic-basics)	1m 45s
tests / All deprecations enabled	2m 19s
tests / Smoke tests (Full Ember Apps) (node-node-tests)	1m 14s
tests / All deprecations enabled, with optional features	2m 14s
tests / Deprecations as errors, with optional features	2m 17s
tests / Deprecations as errors	2m 28s
tests / Smoke tests (Full Ember Apps) (embroiderWebpack-basics)	1m 57s
tests / Production build, with optional features	2m 11s
Notify Discord	0s
Publish alpha from default branch	0s
Publish channel to s3	0s
	48m 26s

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