Changes

#52121 (Jan 30, 2025, 1:30:06 PM)

1. GMM: rework PDP context status — lynxis / detail
2. Refactor mmctx_is_r99 into mmctx.c — lynxis / detail
3. gprs_ms_net_cap_gea_mask(): protect against empty MS Network — lynxis / detail
4. Add include prefix for all libgtp related includes — lynxis / detail