devops(win): fix paths to vswhere.exe in 64-bit shells (#4577)
devops(win): fix paths to vswhere.exe in 64-bit shells (#4577)

The `$PROGRAMFILES` variable is defined per the bitness of the
application: 32-bit shells get `C:\Program Files (x86)`, whereas
64-bit shells get `C:\Program Files`.

Visual Studio, however, has only 32-bit build and is always located in
the `C:\Program Files (x86)` folder.

This patch fixes `//browser_patches/firefox/build.sh` on 64-bit windows
shell.
microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright,microsoft/playwright