c9d9dddc1c
Similar to DWARF's DWO, we should look for PDBs in `target.debug-file-search-paths` if the PDB isn't at the original location or next to the executable. With this PR, the search order is as follows: 1. PDB path specified in the PE/COFF file 2. Next to the executable 3. In `target.debug-file-search-paths` This roughly matches [the order Visual Studio uses](https://learn.microsoft.com/en-us/visualstudio/debugger/specify-symbol-dot-pdb-and-source-files-in-the-visual-studio-debugger?view=vs-2022#where-the-debugger-looks-for-symbols), except that we don't have a project folder and don't support symbol servers. Closes #125355 (though I think this is already fixed in the native plugin).