`call execute('colorsheme foo')` crashes Easymotion in Vim

[utubo]

Vim version 9.1.1336

Steps

1. Use easymotion once.
2. :call execute('colorsheme blue')
   (also, :call win_execute(winid, 'syntax enable') from :help popup-buffer.)

Actual

Error detected while processing ColorScheme Autocommands for "*"..function EasyMotion#highlight#i
nit[1]..EasyMotion#highlight#InitHL:
line   14:
E930: Cannot use :redir inside execute()
E930: Cannot use :redir inside execute()
line   17:
E121: Undefined variable: hlstatus

Cause
redir inside execute causes E930 in Vim 8.0 or later.

[utubo]

I have not tested this, but it looks like this is what needs to be fixed.

utubo@074916f