Merge remote-tracking branch 'origin/fix_coreset_start' into integration_2025_w52 (!3819)

CORESET start multiple of 6 fix

According to the standard any CORESET (except CSET0) would always start
from the first common resource block index which is multiple of 6 in the
BWP. This was not taken into account in the code. The BWP switch CI test
is modified to test a BWP start not multiple of 6.

An exception is the case where rb-Offset-r16 parameter is set, but can't
be used at gNB for FAPI compatibility.

Closes: #1037

nfapi/open-nFAPI/nfapi/public_inc/fapi_nr_ue_interface.h

@@ -73,6 +73,7 @@ typedef struct {
 typedef struct {
   /// frequency_domain_resource;
   uint8_t frequency_domain_resource[6];
+  uint32_t rb_offset;
   uint8_t StartSymbolIndex;
   uint16_t StartSymbolBitmap;
   uint8_t duration;