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8f2874e86d
The compiler wasn't handling `@let` declarations placed inside i18n blocks. The problem is that `assignI18nSlotDependencies` phase assigns the `target` of i18n ops much earlier than the `@let` optimization. If the `@let` ends up getting optimized because it isn't used in any child views, the pointer in the i18n instruction becomes invalid. This hadn't surfaced so far, because we didn't optimize `declareLet` ops, however once we do, we start hitting assertions that the optimized `declareLet` isn't used anywhere. These changes resolve the issue by moving the i18n phases after the `@let` optimization. PR Close #60512