Normalize non-rigid aliases in ty_known_to_outlive - #161246
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Signed-off-by: Amirhossein Akhlaghpour <m9.akhlaghpoor@gmail.com>
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Fixes #161067
ty_known_to_outlive directly registers a TypeOutlives region obligation. with the next solver its input can contain non-rigid aliases which lexical region solving does not expect
Normalize non-rigid aliases before registering the obligation while avoiding trait solving for inputs that do not contain them. callers now pass Unnormalized explicitly