fix: Prevent functional degradation if SD has less than 50MB free space (#3802)

* fix: Prevent functional degradation if SD has less than 50MB free space (#3730)

* justification: https://github.com/EdgeTX/edgetx/discussions/3666

- checks SD card free space at startup, start of logging and writing screenshots
- issues warning to user if SD card has less than 50MB free space
- will not write logs or screenshots if free space is less than 50MB at activation timerReset
- fixes crash of warning popup in logs.cpp (#3728)

* update: warning message if SD card fills up to threshold while logging

* empty commit

* call popup in non-blocking mode

* make b&w compatible to non-blocking popup calls

* 2nd attempt

* Popup:

- turns on backlight if dimmed due to inactivity setting
- if backlight is dimmed due to inactivity setting backlight can turnd on again by any controls

* #3599

* fixed b&w UI

* updated languages CN, CZ, DA, DE, FR, HE, IT, PL, PT, SE, TW

* chore: Update translations

* chore: Remove magic number

* chore: JP language update for SD card full (#3809)

* fix: Don't spam simulator log with file close msgs

---------

Co-authored-by: Michael <mha1@users.noreply.github.com>

radio/src/opentx.cpp

@@ -644,6 +644,11 @@ static void checkRTCBattery()
   }
 }
 
+void checkSDfreeStorage() {
+  if(IS_SDCARD_FULL())
+    ALERT(STR_SD_CARD, STR_SDCARD_FULL, AU_ERROR);
+}
+
 #if defined(PCBFRSKY) || defined(PCBFLYSKY)
 static void checkFailsafe()
 {
@@ -672,6 +677,8 @@ void checkAll()
   checkLowEEPROM();
 #endif
 
+  checkSDfreeStorage();
+  
   // we don't check the throttle stick if the radio is not calibrated
   if (g_eeGeneral.chkSum == evalChkSum()) {
     checkThrottleStick();