qmake preserves illegal characters in @BUNDLEIDENTIFIER@ string on macOS

Steps:

• Create qmake project on macOS
• Set TARGET in .pro file to a string with spaces, like TARGET = "Test App"
• Build project
• Open Info.plist in resulting .app package

Expected result: CFBundleIdentifier entry is "com.yourcompany.TestApp" (spaces removed)

Actual result: CFBundleIdentifier is "com.yourcompany.Test App" (space remains)

"The bundle ID string must be a uniform type identifier (UTI) that contains only alphanumeric (A-Z,a-z,0-9), hyphen (-), and period (.) characters" according to https://developer.apple.com/library/content/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html#//apple_ref/doc/uid/20001431-102070

This seems to happen both for provided and for generated .plist files.