Type/value propagation for `TO_BOOL`

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• Normal _TO_BOOL specializations and friends.
• TO_BOOL_ALWAYS_TRUE (only if it's worth it?)

Linked PRs

• gh-115685: Type/values propagate for TO_BOOL in tier 2 #115686
• GH-115685: Optimize TO_BOOL and variants based on truthiness of input. #116311
• GH-115685: Split _TO_BOOL_ALWAYS_TRUE into micro-ops #116352