fix(ibus): Separate lat long sensors merged to single GPS sensor

[frankiearzu]

Update code to populate single sensor GPS with Lat/Long together

Fixes #4062
Code is safe to be released with 2.9.1

Summary of changes:
This is for FlySky_IBUS protocol.
The original code was poulating GPS latitude and longitude in two instances of the "GPS" sensor. The bug fix asked to give them a different name (GLat.GLon), but the standard in many other protocols in EdgeTX is to have both in a single sensor.
It is displayed correctly in the UI and Widgets. Also the logs will inteact properly with goggle maps.

Testing:
Since i don't have that sensor, worked together with the bug reporter by providing firmware with the changes for him to test for me. After a few iteration, we got it right!!

[richardclli]

Looks good, finally have someone managed to convert the value to GPS format, yeah.

[frankiearzu]

If someone test this with a GPS sensor different than the home buikd oXs, yould you please post a picture of the sensors with the "Show instanceID" flag ON.. I have a suspision that oXs is not handling the instanceID correctly on all GPS sensors, but don't have the equipment to test, In other protocols, all GPS sensors will have same instanceID (different sensorID of couse).

[frankiearzu]

@pfeerick the change that @philmoz did on Main to save memory conflicted with this PR.
Do you want me to keep this one for 2.9.1 and create another PR for 2.10 (main)?

[pfeerick]

This one is already targeting main (2.10), and trivial to correct for both directions, so no need to change anything. Given it looks like there will be few users with GPS, we'll probably have to go with this as is until someone with a working native Flysky GPS says it doesn't work (I stress working because as the GPS I got a few months ago didn't work).

[ivanb123github]

2.9.1 - For TX16s and a homemade GPS sensor (arduino) the display is fine as it should be
note. If there was an option to set the font size in the widgets, it would be even better.