Refactor and consolidate time window logic (#4826)

* Refactor and consolidate windowing logic

* Trunk

* Fixes

* More

* Fix braces and remove unused now variables.

There was a brace in src/mesh/RadioLibInterface.cpp that was breaking
compile on some architectures.

Additionally, there were some brace errors in
src/modules/Telemetry/AirQualityTelemetry.cpp
src/modules/Telemetry/EnvironmentTelemetry.cpp
src/mesh/wifi/WiFiAPClient.cpp

Move throttle include in WifiAPClient.cpp to top.

Add Default.h to sleep.cpp

rest of files just remove unused now variables.

* Remove a couple more meows

---------

Co-authored-by: Tom Fifield <tom@tomfifield.net>

src/mesh/StreamAPI.cpp

@@ -1,6 +1,7 @@
 #include "StreamAPI.h"
 #include "PowerFSM.h"
 #include "RTC.h"
+#include "Throttle.h"
 #include "configuration.h"
 
 #define START1 0x94
@@ -20,10 +21,9 @@ int32_t StreamAPI::runOncePart()
  */
 int32_t StreamAPI::readStream()
 {
-    uint32_t now = millis();
     if (!stream->available()) {
         // Nothing available this time, if the computer has talked to us recently, poll often, otherwise let CPU sleep a long time
-        bool recentRx = (now - lastRxMsec) < 2000;
+        bool recentRx = Throttle::isWithinTimespanMs(lastRxMsec, 2000);
         return recentRx ? 5 : 250;
     } else {
         while (stream->available()) { // Currently we never want to block
@@ -71,7 +71,7 @@ int32_t StreamAPI::readStream()
         }
 
         // we had bytes available this time, so assume we might have them next time also
-        lastRxMsec = now;
+        lastRxMsec = millis();
         return 0;
     }
 }