Auto merge of #70800 - Dylan-DPC:rollup-9jjoptp, r=Dylan-DPC

Auto merge of #70800 - Dylan-DPC:rollup-9jjoptp, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #70635 (rustc_target: Some cleanup to `no_default_libraries`)
 - #70748 (Do not disable field reordering on enums with big discriminant)
 - #70752 (Add slice::fill)
 - #70766 (use ManuallyDrop instead of forget inside collections)
 - #70768 (macro_rules: `NtLifetime` cannot start with an identifier)
 - #70783 (comment refers to removed type)

Failed merges:

r? @ghost