fix #H7708 - change in terrain not noticed

Jumping or teleporting while levitating in xorn form wouldn't toggle
blocking of levitation when moving from open spots to wall/stone and
unblocking of same when moving the opposite way.

This handles those cases but there are no doubt others.  The only
other one I checked was when failed #untrap moves hero onto trap.
That case works correctly--at least after this fix is in place.

Noticed while working on it:  change of terrain didn't always update
the status line.  When levitation became blocked, it still said Lev
and when unblocked, didn't say that.  Next status update got status
condition back in sync.

doc/fixes36.2

@@ -260,6 +260,12 @@ if player creates any menu colors via 'O' while menucolors is off, issue a
 	reminder that it needs to be on in order for those to become effective
 setting second or later named fruit to value beginning with two or more spaces
 	followed by non-space gave "singular of null?" warning
+when blocking/unblocking of levitation or flying was updated due to walking
+	onto different terrain, the relevant status condition wasn't updated
+	on the screen until some other status update happened
+if levitating hero poly'd into pass-wall creature jumped or teleported from
+	terrain that allowed levitation to terrain that didn't or vice versa,
+	blocking of levitation wasn't updated properly
 
 
 Fixes to Post-3.6.1 Problems that Were Exposed Via git Repository