all: Fix various user-facing and non-user-facing typos (#8509)

Found via `codespell -q 3 -S lang,./gui/default/vendor -L benchs,bu,inflight,ro`

lib/watchaggregator/aggregator.go

@@ -399,7 +399,7 @@ func (a *aggregator) popOldEventsTo(to map[string]*aggregatedEvent, dir *eventDi
 
 func (a *aggregator) isOld(ev *aggregatedEvent, currTime time.Time, delayRem bool) bool {
 	// Deletes should in general be scanned last, therefore they are delayed by
-	// letting them time out. This behaviour is overriden by delayRem == false.
+	// letting them time out. This behaviour is overridden by delayRem == false.
 	// Refer to following comments as to why.
 	// An event that has not registered any new modifications recently is scanned.
 	// a.notifyDelay is the user facing value signifying the normal delay between
@@ -413,7 +413,7 @@ func (a *aggregator) isOld(ev *aggregatedEvent, currTime time.Time, delayRem boo
 	// is delayed to reduce resource usage, but after a certain time (notifyTimeout)
 	// passed it is scanned anyway.
 	// If only removals are remaining to be scanned, there is no point to delay
-	// removals further, so this behaviour is overriden by delayRem == false.
+	// removals further, so this behaviour is overridden by delayRem == false.
 	return currTime.Sub(ev.firstModTime) > a.notifyTimeout
 }