a11y label

lang/main.json

             "fullScreen": "Toggle full screen",
             "hangup": "Leave the call",
             "invite": "Invite people",
+            "localRecording": "Toggle local recording controls",
             "lockRoom": "Toggle room lock",
             "moreActions": "Toggle more actions menu",
             "moreActionsMenu": "More actions menu",

react/features/local-recording/components/LocalRecordingButton.js

                     onClose = { this._onCloseDialog }
                     position = { 'top right' }>
                     <ToolbarButton
+                        accessibilityLabel
+                            = { t('toolbar.accessibilityLabel.localRecording') }
                         iconName = { iconClasses }
                         onClick = { this._onClick }
                         tooltip = { t('localRecording.dialogTitle') } />