IOS Universal link association between my app and website not working

Question

I'm using Qt creator to build an iOS, iPadOS Qt app. I'm following this Apple documentation to associate Universal links to my app.

I placed the apple-app-site-association file in the .well-known directory as documented.

// Note: The Team ID and the app bundle identifier are correct. I printed the bundle ID programatically and pasted here.
{
    "applinks": {
        "details": [
           {
               "appIDs": [ "<Team ID>.<bundle identifier>" ],
               "components": [
                 {
                     "comment": "Match any url (testing)"
                 }
               ]
           }
        ]
    }
}

This is in the website side.

In the app side, I have set the associated-domains key as follows

// file name - IOSQtLaunchUsingLinks.entitlements

// Note: If my website's URL is https://sample.github.io, I pasted 'sample.github.io' in place of '<website>' below.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
        <key>com.apple.developer.associated-domains</key>
        <array>
                <string>applinks:<website></string>
        </array>
</dict>
</plist>

This entitlement file is set using CMake as follows:

set_target_properties (appIOSQtLaunchUsingLinks PROPERTIES
    MACOSX_BUNDLE_INFO_PLIST "info.plist.in"
    XCODE_ATTRIBUTE_CODE_SIGN_ENTITLEMENTS "IOSQtLaunchUsingLinks.entitlements"
)

The above steps worked in a native iOS project - If I click my website link, the app launches. But in a Qt iOS project created using CMake, clicking the website link always launches the website and not the app.

Not sure what have I missed. Please help.