main: Do not allow resizing recoveryOS partition

This was only ever sort-of allowed in expert mode, since otherwise
it never meets the space requirements, but let's make sure to
block it altogether.

Signed-off-by: Hector Martin <[email protected]>

Author: marcan

src/main.py

@@ -550,6 +550,10 @@ def get_min_free_space(self, p):
 
     def can_resize(self, p):
         logging.info(f"Checking resizability of {p.name}")
+        if p.type != "Apple_APFS":
+            logging.info(f"  Not APFS or system container")
+            return False
+
         if p.container is None:
             logging.info(f"  No container?")
             return False