build.cmd does not regenerate managed PGO data on changes #53637
Description
StandardOptimizationData.mibc does not seem to be regenerated when it exists, even when the opt data package changes:
git checkout d435388^
rm .\artifacts\bin\coreclr\windows.x64.Checked\StandardOptimizationData.mibc
.\build.cmd clr -rc checked -lc release
(gci .\artifacts\bin\coreclr\windows.x64.Checked\StandardOptimizationData.mibc).Length
# prints 8000512
git checkout d435388
.\build.cmd clr -rc checked -lc release
(gci .\artifacts\bin\coreclr\windows.x64.Checked\StandardOptimizationData.mibc).Length
# prints 8000512 again
rm .\artifacts\bin\coreclr\windows.x64.Checked\StandardOptimizationData.mibc
.\build.cmd clr -rc checked -lc release
(gci .\artifacts\bin\coreclr\windows.x64.Checked\StandardOptimizationData.mibc).Length
# prints 9137664d435388 is a commit where the PGO data changed significantly.