Fixed APN and SCC parsing

[dr-dolomite]

Applied fixes:

• APN parse now fetches the +CGCONTRDP line and gets the third value despite having double quotes or not.
• The get_secondary_band function was now being called conditionally. If the network is NR5G SA, apply the first line deletion to remove the NR5G PCC band.
• Changed NSA Network mode to simply "NR5G NSA"