Correct two comments in the Choria transport

The provided_features comment said the list drives task selection, but
select_implementation overrides the Base method that reads it; the list
serves apply_prep. The context parameter of poll_with_retries also names
the poll failure error now, not only log lines.

Signed-off-by: nmburgan <13688219+nmburgan@users.noreply.github.com>
Assisted-by: Claude Fable 5.1 <noreply@anthropic.com>

Author: nmburgan

lib/bolt/transport/choria.rb

@@ -45,10 +45,9 @@ def initialize
         @default_collective = nil
       end
 
-      # Advertise both shell and powershell so tasks with either requirement
-      # can be selected. The per-target selection happens in
-      # select_implementation below, which picks the right feature set based
-      # on the target's detected OS.
+      # Task selection does not use this list, since select_implementation
+      # below overrides the Base method that reads it. The list is kept for
+      # apply_prep, which reads a transport's provided features.
       def provided_features
         %w[shell powershell]
       end

lib/bolt/transport/choria/helpers.rb

@@ -26,7 +26,7 @@ def target_count(targets)
       #
       # @param targets [Array, Hash] Initial targets to poll (duped internally)
       # @param timeout [Numeric] Maximum seconds before exiting
-      # @param context [String] Label for log messages
+      # @param context [String] Label for log and error messages
       # @return [Hash] with keys:
       #   - :completed [Hash{Target => Hash}] All finished target outputs, plus a poll
       #     error for each pending target after RPC_FAILURE_RETRIES failed polls in a row