[6.2][stdlib] Allow metatype comparisons to work with outdated compilers #80867
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Add a new language feature to avoid the stdlib’s swiftinterface becoming unintelligible to outdated compiler builds due to the generalization of Builtin.is_same_metatype. rdar://149396721 (cherry picked from commit 0c406b8)
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This is cherry-picked from #80859
Add a new language feature to avoid the stdlib’s swiftinterface becoming unintelligible to outdated compiler builds due to the generalization of Builtin.is_same_metatype.
rdar://149396721