Rollup of 5 pull requests

[Dylan-DPC]

Successful merges:

• Add assertion that transmute_copy's U is not larger than T #98839 (Add assertion that transmute_copy's U is not larger than T)
• Windows: Use FindFirstFileW for getting the metadata of locked system files #98916 (Windows: Use FindFirstFileW for getting the metadata of locked system files)
• Add test for #96797 #99059 (Add test for Functions referenced by global_asm merged into other functions by LLVM #96797)
• add missing null ptr check in alloc example #99198 (add missing null ptr check in alloc example)
• Add regression test for #95230 #99394 (Add regression test for Outlives error for where-clause with HRTB and no trait bounds #95230)

Failed merges:

r? @ghost
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