SAFETY-129: find readings 30 s late within about 90 s at a 5 s meter

The meter's delay fit needed 16 new values in 60 s, so at the owner's 5 s P1
only the batteries' fit ran and 30 s late was found after about 3 minutes
(export to -420 W). A meter that slow is now also fitted over 120 s; it calls
a delay late only over 16 s, on two fits in a row, with the same corroboration
as before, and never ends a verdict, so a slow battery (R2-1) runs as before.
Found about 90 s after the start, export above -200 W. 10 s late at a 5 s
meter is not found (nothing swings; it cannot be told from a 10 s battery).

Co-Authored-By: Claude <noreply@anthropic.com>

goodwe_controller/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Home now draws today's charge from the grid for every hour the add-on will really charge, not only the run under way ([[UX-77]]).
 - When Home Assistant passes readings on late, control no longer swings on them: it waits until the battery shows its last power request, and the peak limit no longer asks for full power on them. The page says so, and if the readings stay too late every inverter goes to 0 W ([[SAFETY-128]]).
+- With a 5 s meter, readings 30 s late are now noticed after about 90 seconds, not 3 minutes ([[SAFETY-129]]).
 
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