main
Unions: cache some calculated results on NamedTypeSymbol representing a union type (#84589)
Fix typo in OverloadResolution.PairedExtensionOperatorSignatureComparer.Equals (#84639)
Merge remote-tracking branch 'dotnet/main' into merge-main
Extensions: misc checks on receiver parameter and extension members (#77937)
Fix nested nullability of collection expressions (#74490)
Merge remote-tracking branch 'dotnet/master' into merges/master-to-features/UsedAssemblyReferences