prevent rcd destroying planets (#16120)

Co-authored-by: deltanedas <@deltanedas:kde.org>

Resources/Prototypes/Tiles/planet.yml

@@ -8,6 +8,7 @@
     collection: FootstepAsteroid
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 # Desert
 - type: tile
@@ -22,6 +23,7 @@
     collection: FootstepAsteroid
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 - type: tile
   id: FloorLowDesert
@@ -35,6 +37,7 @@
     collection: FootstepAsteroid
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 # Grass
 - type: tile
@@ -60,6 +63,7 @@
   itemDrop: FloorTileItemGrass
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 # Lava
 - type: tile
@@ -72,6 +76,7 @@
     collection: FootstepAsteroid
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 # Snow
 - type: tile
@@ -91,5 +96,6 @@
   friction: 0.20
   heatCapacity: 10000
   weather: true
+  indestructible: true
 
 # Wasteland