fix: fix platform clean when there is a platform with specific version already added
fix: fix platform clean when there is a platform with specific version already added

To reproduce:
1. `tns platform add ios@5.1.0`
2. `tns platform clean ios`

Expected output:
Platform ios successfully removed.
Copying template files...
Platform ios successfully added. v5.1.0

Actual output:
Platform ios successfully removed.
Copying template files...
Platform ios successfully added. v5.4.2

NativeScript/nativescript-cli,NathanaelA/nativescript-cli,NativeScript/nativescript-cli,NathanaelA/nativescript-cli,NativeScript/nativescript-cli,NathanaelA/nativescript-cli,NativeScript/nativescript-cli,NathanaelA/nativescript-cli