Rust optimizer improvements (#1199) #4286

Job	Run time
Check for upstream trigger phrase	4s
Test importing with bare requirements	12m 18s
Build & Test (ubuntu-latest, python: 3.9, distributed: false)	8m 27s
Build & Test (ubuntu-latest, python: 3.10, distributed: false)	8m 44s
Build & Test (ubuntu-latest, python: 3.11, distributed: false)	8m 58s
Build & Test (ubuntu-latest, python: 3.12, distributed: false)	9m 14s
Build & Test (windows-latest, python: 3.9, distributed: false)	16m 59s
Build & Test (windows-latest, python: 3.10, distributed: false)	15m 24s
Build & Test (windows-latest, python: 3.11, distributed: false)	19m 34s
Build & Test (windows-latest, python: 3.12, distributed: false)	17m 41s
Build & Test (macos-latest, python: 3.9, distributed: false)	20m 5s
Build & Test (macos-latest, python: 3.10, distributed: false)	19m 52s
Build & Test (macos-latest, python: 3.11, distributed: false)	20m 46s
Build & Test (macos-latest, python: 3.12, distributed: false)	22m 35s
Build & Test (ubuntu-latest, python: 3.9, distributed: true)	8m 39s
Build & Test (ubuntu-latest, python: 3.11, distributed: true)	10m 2s
	3h 39m 22s

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