[RyuJit][Armel] Do not lose type information (#15449)

[RyuJit][Armel] Do not lose type information (#15449)

* Do not lose type information

fgMorphMultiregStructArg could lose type information when replaced smth like this:
 GT_OBJ - TYP_STRUCT     <== arg
  + GT_ADDR - TYP_I_IMPL
   +  + GT_LCL_VAR - TYP_BLK  <== argValue

* Move the test to pri0 to test in ci.

* add an assert

* add the test to the arm list

* make the optimization only if struct handlers match.

* format job

* fix for the unoptimized case.

* check that we have addr node.

* change the reason to lvaSetVarDoNotEnregister