ConfigRawParams: When setting a parameter changes the number of parameters, do a full refresh. and check if reboot is needed

[EosBandi]

If a param change causing the change in the number of parameters, the parameter subsystem could stuck in a "downloading is in progress" state. This pr:
removes the name check, since not only _enable parameters can change the number of parameters
Add a check at the end of Write Params and if the reported param number not equals with the current number, it notify the user and do a param refresh.
This fixes #3198

[Hwurzburg]

THANKS! I see the build artifact but not sure how to run it locally for some testing....its an aab file?

[davidbuzz]

param refresh dangerous when armed, as low bandwidth or long range links can be adversely affected - i support it if its tweaked to only do this when disarmed.

[rmackay9]

PeterH suggested that we should only do the full refresh when the vehicle is disarmed.

[Hwurzburg]

while testing I got this error:

may or may not be related

Otherwise seems to work well....I agree with Pete's comment re refresh only while disarmed...

this PR is really needed!!! thanks

[EosBandi]

while testing I got this error:
Based on where it happened in the code, this is unrelated. Do you have steps to repro ?

Otherwise seems to work well....I agree with Pete's comment re refresh only while disarmed...

Indeed, added check for armed state.

[Hwurzburg]

@EosBandi will try to reproduce...I was just randomly enablilng/changing parameters that I know need reboots