Fix inverted condition on the max glucose count log

[highflyer123]

The change

-        if result.count < maxFetchCount() {
+        if result.count >= maxFetchCount() {
             print("Hit max glucose count: Consider increasing")
         }

Why

The condition was inverted in 6698b30 ("Remove assertion"), which rewrote

assert(result.count < maxFetchCount(), "Hit max count: Consider increasing")

as

if result.count < maxFetchCount() { print("Hit max glucose count: Consider increasing") }

assert fires when its condition is violated; the if fires when it holds.

result.count can never exceed maxFetchCount() —
fetchGlucose(dateInterval:maxCount:) passes maxCount through as Nightscout's
count= query parameter, and everything after it (compactMap into
[GlucoseEntry], then a 1:1 toGlucoseSample()) can only shrink the array. So
the warning prints on every successful fetch and stays silent in exactly the
case it exists to report — a fetch truncated at the cap.

>= rather than == so it still reports a server that ignores count=.
Diagnostic only — result is returned unchanged.

Testing

Built and tested against dev (fc86735), Xcode 26.2, iOS 26.2 simulator:
LoopCaregiverKit and the LoopCaregiver app scheme build clean, and
LoopCaregiverKitTests passes (9 tests, 0 failures).