Type-assert the return type of collect(...) in TOML (#59932)

(cherry picked from commit fda084f)

Author: JamesWrigley

stdlib/TOML/src/print.jl

@@ -118,7 +118,7 @@ function print_integer(io::IO, value::Integer)
 end
 
 function print_inline_table(f::MbyFunc, io::IO, value::AbstractDict, sorted::Bool)
-    vkeys = collect(keys(value))
+    vkeys = collect(keys(value))::AbstractArray
     if sorted
         sort!(vkeys)
     end