TestFlight window position is locked by default

[CleanCell]

I propose to change the default to have the TestFlight window position unlocked.

Rationale:

• The default position of the window overlaps flight panels. It is thus inconvenient for some. Also I was following the KSP-RO RP-1 tutorial where a screen shot shows the TestFlight window in a custom position, which I could not figure out how to achieve.
• Moving a window should be straightforward.
• The setting to allow moving the window is hidden (one has to open the settings) and its name not explicit (MSD is not explicit, and the window has no title).
• The in-game mechanism to lock the position of a window is with a "pin". Once this is understood by the user introducing another mechanism to achieve the same gets in the way of the user trying to do something with the game.

[jwvanderbeck]

All valid criticisms. Though on the last point there was no real standard among mods way back then.