Use a different keybinding for editor::AcceptPartialInlineCompletion action (#20419)

Both `editor::AcceptPartialInlineCompletion` and the keybinding for
`editor::MoveToEndOfLine` had the same keybinding inside the editor, and
with Supermaven's fast proposals, it's been very frequently used
incorrectly.

Closes #ISSUE

Release Notes:

- (breaking change) Use `ctrl-right` instead of `cmd-right` as a macOS
default for `editor::AcceptPartialInlineCompletion`

assets/keymaps/default-macos.json

@@ -150,7 +150,7 @@
     "bindings": {
       "alt-]": "editor::NextInlineCompletion",
       "alt-[": "editor::PreviousInlineCompletion",
-      "cmd-right": "editor::AcceptPartialInlineCompletion"
+      "ctrl-right": "editor::AcceptPartialInlineCompletion"
     }
   },
   {